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Interior Design Course
More than 2 million learners worldwide

Interior Design Course

Transform any space from ordinary to extraordinary with a comprehensive interior design education built for real results. This course takes you from foundational principles to professional project delivery, covering colour theory, space planning, materials, lighting, and client management. Whether you are launching a design career or elevating your creative practice, this is your complete blueprint to brilliance.

Dedika for businesses

What you will learn:

  • Apply core design principles, colour theory, and spatial planning to real interior projects.

  • Build cohesive material palettes using finishes, textiles, flooring, and sustainable options.

  • Design layered lighting plans with accurate fixture specifications for any room type.

  • Develop professional client communication skills, from discovery interviews to final presentations.

  • Produce scaled floor plans, furniture schedules, and procurement documentation with confidence.

  • Establish a design business framework including pricing models, branding, and lead generation strategies.

How you study in practice Interior Design Course

How you practise Interior Design Course

For companies looking to train their teams

With Dedika for Businesses, the course includes exercises and examples tailored to your own business and the specific needs of your company.

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Course content

8 Chapters • 37 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Foundations of Interior Design

  • Lesson 1 • Understanding Client Needs and Lifestyle

    Teaches structured discovery methods to uncover functional and emotional client requirements. Aligns design intent with real occupant behaviour from the project's outset.

  • Lesson 2 • Design Vocabulary and Terminology

    Establishes precise professional language used in client communication and project documentation. Accurate terminology prevents costly misunderstandings on real projects.

  • Lesson 3 • Core Design Principles and Elements

    Introduces balance, rhythm, emphasis, proportion, and unity as the grammar of design. These principles govern every spatial and aesthetic decision throughout the course.

  • Lesson 4 • History and Evolution of Interior Design

    Traces design from ancient civilizations through modernism to contemporary practice. Provides historical context that informs every stylistic decision made later in the course.

Chapter 2See details

Colour Theory and Application

  • Lesson 1 • The Colour Wheel and Colour Relationships

    Explains hue, value, saturation, and the relationships between primary, secondary, and tertiary colours. Provides the structural framework for all palette-building work that follows.

  • Lesson 2 • Light and Its Effect on Colour

    Analyses how natural and artificial light sources shift colour perception throughout the day. Equips students to test and select colours under real lighting conditions.

  • Lesson 3 • Psychology of Colour in Interiors

    Examines how colour influences mood, perceived space size, and occupant well-being. Connects psychological research to practical room-by-room colour decisions.

  • Lesson 4 • Building and Presenting Colour Palettes

    Guides students through creating cohesive multi-room palettes and presenting them professionally. Bridges colour theory to client-facing deliverables used in real projects.

Chapter 3See details

Space Planning and Layout Design

  • Lesson 1 • Space Planning for Special Rooms

    Applies space planning principles to kitchens, bathrooms, home offices, and commercial areas. Addresses unique functional requirements that differ from standard residential rooms.

  • Lesson 2 • Reading and Interpreting Floor Plans

    Teaches students to decode architectural drawings, symbols, and scale notations accurately. This skill is prerequisite to every space planning and furniture selection task ahead.

  • Lesson 3 • Drawing Scaled Floor Plans

    Instructs students in producing hand-drawn and digital scaled plans with accurate dimensions. Scaled plans are the primary communication tool between designers and contractors.

  • Lesson 4 • Traffic Flow and Circulation Paths

    Defines primary, secondary, and emergency circulation routes and their minimum clearances. Proper flow planning prevents functional failures in completed interiors.

  • Lesson 5 • Furniture Arrangement Strategies

    Presents proven arrangement templates for living, dining, bedroom, and open-plan spaces. Students apply these strategies to create balanced, functional room layouts.

Chapter 4See details

Materials, Finishes, and Textures

  • Lesson 1 • Countertops, Cabinetry, and Millwork

    Evaluates stone, solid surface, wood, and metal options for countertops and built-in cabinetry. Students specify materials that balance aesthetics, budget, and functional demands.

  • Lesson 2 • Flooring Materials and Selection

    Compares hardwood, tile, stone, carpet, vinyl, and concrete across performance and aesthetic criteria. Matching flooring to room use and client lifestyle is the core skill developed.

  • Lesson 3 • Wall Treatments and Finishes

    Explores paint sheens, wallcoverings, panelling, plaster, and tile as wall finish options. Students learn to select treatments that reinforce the overall design concept.

  • Lesson 4 • Textiles, Upholstery, and Soft Goods

    Covers fibre content, weave structures, performance ratings, and care requirements for interior textiles. Proper textile specification prevents premature wear and client dissatisfaction.

  • Lesson 5 • Sustainable and Eco-Friendly Materials

    Introduces recycled, reclaimed, and low-emission materials and their environmental certifications. Sustainable specification is increasingly required by clients and building standards.

Chapter 5See details

Lighting Design Fundamentals

  • Lesson 1 • Lighting Calculations and Placement

    Teaches lumen output calculations, spacing rules, and fixture height guidelines for each room type. Accurate calculations prevent under-lit or glare-heavy spaces in finished projects.

  • Lesson 2 • Controls, Dimmers, and Smart Lighting

    Covers dimmer compatibility, scene programming, and smart-home lighting integration for modern interiors. Control systems multiply the functional value of any lighting design.

  • Lesson 3 • Light Sources and Fixture Types

    Compares LED, fluorescent, halogen, and incandescent sources by efficiency, colour rendering, and cost. Fixture type selection directly affects energy use and maintenance schedules.

  • Lesson 4 • Types of Lighting and Their Functions

    Distinguishes ambient, task, accent, and decorative lighting and their roles in a complete scheme. Understanding each layer is essential before designing any lighting plan.

  • Lesson 5 • Creating a Room Lighting Plan

    Guides students through drafting a complete lighting plan with fixture schedules and switching diagrams. This deliverable is required on virtually every professional design project.

Chapter 6See details

Furniture Selection and Sourcing

  • Lesson 1 • Furniture Styles and Historical Context

    Surveys major furniture periods from traditional to contemporary and identifies their defining characteristics. Style literacy enables designers to mix periods cohesively and advise clients confidently.

  • Lesson 2 • Sourcing Channels and Trade Resources

    Maps the landscape of retail, trade-only, custom, and vintage sourcing options available to designers. Knowing where to source efficiently is a core professional competency.

  • Lesson 3 • Furniture Specification and Scheduling

    Teaches students to write complete furniture specifications and compile organised procurement schedules. Accurate schedules prevent ordering errors and keep projects on timeline.

  • Lesson 4 • Construction Quality and Durability

    Evaluates joinery methods, frame materials, cushion construction, and finish quality in furniture. Specifying durable pieces protects client investment and the designer's professional reputation.

  • Lesson 5 • Budget Allocation and Value Engineering

    Presents strategies for distributing furniture budgets across investment and value-tier pieces. Students learn to achieve high-design results within real-world budget constraints.

Chapter 7See details

Styling, Accessories, and the Final Layer

  • Lesson 1 • Principles of Decorative Accessorising

    Applies design principles to object grouping, scale variation, and layering of decorative items. Accessories are the final layer that transforms a furnished room into a designed space.

  • Lesson 2 • Plants, Greenery, and Biophilic Elements

    Integrates living plants, preserved botanicals, and natural materials to support biophilic design goals. Greenery improves air quality, mood, and the perceived warmth of any interior.

  • Lesson 3 • Art Selection and Placement

    Covers art sourcing, scale selection, hanging heights, and gallery wall composition for interiors. Properly placed art anchors a room and reflects the client's personal narrative.

  • Lesson 4 • Vignette Styling and Tablescaping

    Teaches the construction of styled vignettes on consoles, shelves, coffee tables, and dining surfaces. Vignette skills are essential for both client installations and portfolio photography.

Chapter 8See details

Project Management and Client Delivery

  • Lesson 1 • Contracts, Fees, and Agreements

    Covers letter-of-agreement components, fee structures, and scope-of-work definitions for design services. Proper contracts protect both the designer and the client throughout the project.

  • Lesson 2 • Portfolio Documentation and Photography

    Guides students in photographing completed projects and curating images for a professional portfolio. A strong portfolio is the primary marketing tool for every interior design career.

  • Lesson 3 • Project Phases and Design Process

    Maps the standard design process from discovery through schematic design, development, and installation. A clear phase structure keeps projects organised and client expectations aligned.

  • Lesson 4 • Installation Day Planning and Execution

    Prepares students to coordinate movers, tradespeople, and deliveries for a seamless installation day. A well-executed installation is the moment the client's vision becomes reality.

  • Lesson 5 • Procurement, Ordering, and Tracking

    Establishes systems for placing orders, tracking shipments, and managing vendor communications efficiently. Procurement errors are among the most common causes of project delays and cost overruns.

Certification

Your valid completion certificate

This course is for you:

  • Aspiring designers: ready to convert a lifelong passion into a genuine profession.

  • Homeowners: wishing to redesign their own spaces with professional-level confidence.

  • Decorators: seeking structured knowledge to move beyond instinct and intuition.

  • Career changers: leaving unrelated fields to build a creative, client-facing business.

  • Architects: expanding their scope to include full interior design service offerings.

  • Staging professionals: looking to deepen expertise and attract higher-value clientele.

What our students say

Your lessons are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I'm grateful for everything you do, I've already recommended you to other people...
Giulio Carlo
Giulio CarloDigital Marketing Student
I like how the lessons are straight to the point and how I can change chapters and skip content I don't need.
Mariana Ferres
Mariana FerresPhotography Student
I like the content and the way videos are presented and transcribed, which speeds up the process!
Luciana Alvarenga
Luciana AlvarengaNail Design Student
The platform is fast, simple to use. The diversity of content and complementary videos help a lot with learning.
André Felipe
André FelipePrompt Engineering Student

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