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 wondering how websites are made, you're not alone. Any website you visit, from Google to Instagram, is built using main three languages: HTML, CSS, and JavaScript. These are like the building blocks of the web. Whether you want to become a web developer or just understand how websites work, learning these three languages is the perfect place to start. Let's now understand this in detail one by one. 1. What is HTML? HTML stands for HyperText Markup Language . It’s the structure of every website. Think of HTML as the structure or framework of a building — it defines where the rooms, doors, and windows are placed. In websites, HTML defines the content: Headings Paragraphs Images Links Buttons For example: Here, <h1> is used for a main heading, and <p> creates a paragraph. Browsers read these tags and display them as text on the screen. In short: HTML tells the browser what to show . 2. What is CSS? CSS stands for Cascading Styl...