#beginner
Variables and Data Types
In the Introduction to JavaScript, we touched on let, const, and the basic data types. This tutorial goes deeper — we’ll explore how JavaScript handles types under the hood, what type coercion actually does, and the practical patterns you’ll use daily like template literals, destructuring, and type checking. var, let, and const in Depth You already know the basics: use const by default, let when you need to reassign. But the differences go beyond reassignment — they affect scoping and hoisting. Read more →
April 3, 2026
Variables and Data Types
In the Introduction to Python, we used variables and saw the basic types like str, int, and float. This tutorial goes deeper — we’ll look at how Python handles types, what mutability means, how to convert between types, and the string and number operations you’ll use constantly. How Variables Work in Python In Python, variables don’t store values directly — they’re names that point to objects in memory. When you write x = 42, Python creates an integer object 42 and makes x point to it. Read more →
April 3, 2026
CSS Box Model
Every element on a web page is a rectangular box. Whether it’s a heading, a paragraph, or a button — the browser wraps it in a box with four layers: content, padding, border, and margin. This is the CSS Box Model, and understanding it is essential for controlling layout and spacing. If you’ve been through the CSS Introduction, you’ve already styled elements with colors and fonts. Now we’ll look at how those elements take up space on the page. Read more →
April 3, 2026
SQL Basics
Introduction SQL (Structured Query Language) is the standard language for interacting with relational databases. Whether you’re building a web application, analyzing data, or preparing for a technical interview, SQL is a skill you’ll use constantly. It lets you create tables, insert data, query records, update values, and delete rows — all with a readable, declarative syntax. SQL is pronounced either “sequel” or “S-Q-L” — both are widely accepted. The language has been around since the 1970s and remains the most widely used database language in the world. Read more →
April 3, 2026
Introduction to JavaScript
JavaScript is the programming language that makes websites interactive. While HTML gives a page its structure and CSS controls how it looks, JavaScript is what makes things happen — responding to clicks, updating content, validating forms, and much more. If you’ve ever clicked a button on a website and something changed without the page reloading, that was JavaScript at work. In this tutorial, we’ll cover the fundamentals you need to start writing JavaScript. Read more →
April 3, 2026