What is Power BI? A Complete Beginner’s Guide to Features, DAX & Uses (2026) If you work with data — or you want to — you’ve probably heard the name Power BI at least once. Maybe your manager mentioned it. Maybe you saw it on a job description. Or maybe you’re just curious about what all the fuss is about. Well, you’re in the right place. In this guide, we’re going to cover everything you need to know about Power BI — what it is, what it does, how to install it, how it compares to Excel, and how to write your first DAX formula. Whether you’re a complete beginner or someone who has used Excel for years, this guide is for you. Let’s get started! What is Power BI? Power BI is a business intelligence and data visualization tool developed by Microsoft. In simple words, it helps you take raw data — from Excel files, databases, websites, or apps — and turn it into beautiful, interactive reports and dashboards Instead of staring at boring rows and columns in a spreadsheet, Power BI lets y...
If you're thinking of learning coding and don't know where to start, there are many free websites that teach coding from scratch.
Whether you want to build apps, websites, or explore artificial intelligence, these beginner-friendly platforms will help you learn coding step by step.
Table of Contents
- W3Schools
- FreeCodeCamp
- Codecademy (Free Plan)
- GeeksforGeeks
- Sololearn
- Programiz
- Khan Academy
- Tips to Learn Coding Effectively
1. W3Schools
Best for: Complete beginners who want quick and simple tutorials.
W3Schools is one of the most popular coding platforms for beginners. It offers tutorials on HTML, CSS, JavaScript, Python, C, C++, Java, SQL, and more — all explained in simple language.
Each lesson includes a “Try it Yourself” editor that lets you practice coding directly in your browser.
Why choose W3Schools:
- Simple explanations with examples
- Practice editor in every lesson
- Free certification quizzes available
Visit: www.w3schools.com
2. FreeCodeCamp
Best for: Learning by building real projects.
FreeCodeCamp offers full courses in web development, JavaScript, Python, and Data Science — completely free. You learn by working on projects like websites, APIs, and applications.
Why choose FreeCodeCamp:
- Completely free with verified certificates
- Learn by building real-world projects
- Strong supportive community
Visit: www.freecodecamp.org
3. Codecademy (Free Plan)
Best for: Hands-on learning with quizzes and mini-projects.
Codecademy’s free plan offers beginner courses in HTML, CSS, Python, JavaScript, and Java. You type and run code directly in your browser, getting instant feedback.
Why choose Codecademy:
- Interactive, browser-based learning
- Clear explanations and visual guidance
- Community support for beginners
Visit: www.codecademy.com
4. GeeksforGeeks
Best for: Placement preparation and technical exams.
GeeksforGeeks offers tutorials, coding problems, and interview preparation materials in languages like C, C++, Java, and Python. It’s excellent for students preparing for placements or technical tests.
Why choose GeeksforGeeks:
- Learn both theory and coding practice
- Covers DSA and competitive programming
- Written by experienced developers
Visit: www.geeksforgeeks.org
5. Sololearn
Best for: Learning on mobile.
Sololearn offers bite-sized coding lessons in Python, Java, HTML, C++, and more. You can practice coding directly from your phone using their mobile app.
Why choose Sololearn:
- Free mobile app available
- Beginner-friendly short lessons
- Interactive coding quizzes
Visit: www.sololearn.com
6. Programiz
Best for: Step-by-step learning of coding logic.
Programiz offers simple explanations and a built-in online compiler. You can practice Python, Java, C, or C++ easily in your browser.
Why choose Programiz:
- Clean and minimal interface
- Perfect for self-learners
- Built-in compiler for practice
Visit: www.programiz.com
7. Khan Academy
Best for: Visual learners and school students.
Khan Academy teaches programming and computer science using simple, story-based videos and visual lessons. It’s great for beginners and school students.
Why choose Khan Academy:
- Easy to understand with visuals
- Free forever with no ads
- Great for younger learners
Visit: www.khanacademy.org
Tips to Learn Coding Effectively
- Practice daily — even 30 minutes a day matters.
- Apply what you learn by creating mini projects.
- Join online communities for support and motivation.
- Focus on one programming language at first.
Coding isn’t as hard as it seems — it’s just like learning a new language. Start small, stay consistent, and you’ll grow from a beginner to a confident coder.
These free websites make your learning journey smoother and more enjoyable. Start today and take your first step toward mastering programming!
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