Resources • Free E-Books

Practice with free online books & courses

We collected some of the best free resources on the internet so you can practice programming, engineering, business and soft skills alongside your InterviewMate journey.

How to use this page

Pick a category that matches your goal and start with beginner-friendly resources. Save links or add them to your learning routine.

  • • Programming & CS – for coding interviews and logic.
  • • Engineering – for technical core subjects.
  • • Business & Commercial – for non-tech and management roles.
  • • Non-Tech – communication, soft skills and career growth.

Programming & Computer Science

Hand-picked free learning resources.

  • Eloquent JavaScript (3rd Edition)

    Modern introduction to JavaScript with exercises and interactive examples.

    Beginner–IntermediateOnline Book (HTML / PDF)
    Open resource

  • Automate the Boring Stuff with Python

    Learn Python by building small automation scripts and real-life tools.

    BeginnerOnline Book
    Open resource

  • CS50 – Introduction to Computer Science

    Harvard’s famous free CS course – great foundation for interviews.

    BeginnerFree Course + Notes
    Open resource

  • MIT OpenCourseWare – Algorithms

    Free lecture notes and assignments for algorithms and data structures.

    Intermediate–AdvancedCourse Notes / PDFs
    Open resource

Engineering Fundamentals

Hand-picked free learning resources.

  • OpenStax Engineering Textbooks

    Free peer-reviewed textbooks for electrical, mechanical and more.

    UndergraduatePDF Textbooks
    Open resource

  • NPTEL Engineering Courses

    Video lectures from Indian IIT professors on core engineering topics.

    Undergraduate–AdvancedVideo + Notes
    Open resource

  • Khan Academy – Physics & Math

    Build strong math and physics foundations for technical interviews.

    Beginner–IntermediateVideos + Practice
    Open resource

Business, Commercial & Management

Hand-picked free learning resources.

  • OpenStax – Introduction to Business

    Free textbook covering marketing, finance, HR and operations basics.

    BeginnerPDF Textbook
    Open resource

  • Investopedia Guides

    Clear explanations of finance, accounting, investing and market terms.

    Beginner–IntermediateWeb Articles
    Open resource

  • Coursera – Project Management Basics (Audit Free)

    Learn fundamentals of planning, tracking and delivering projects.

    BeginnerFree Course (Audit)
    Open resource

Non-Tech & Soft Skills

Hand-picked free learning resources.

  • Improve Your English Communication Skills

    Free MOOC tracks focused on speaking confidently in professional settings.

    Beginner–IntermediateFree Course (Audit)
    Open resource

  • MindTools – Soft Skills Articles

    Short reads on leadership, teamwork, time management and more.

    All levelsWeb Articles
    Open resource

  • O’Reilly – Free Open Books (Selected)

    A small collection of free books on career, culture and productivity.

    All levelsPDF / Online Book
    Open resource