1. Learn HTML

Hypertext Markup Language

Hypertext Markup Language (HTML) is the standard markup language for creating web pages and web applications.

With Cascading Style Sheets (CSS) and JavaScript it forms a triad of cornerstone technologies for the World Wide Web.

HTML Example

Your heading

Your paragraph.

2. Learn CSS

Cascading Style Sheets

Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language.












CSS Example

body {
    background-color: red;
}
h1 {
    color: white;
    text-align: left;
}
p {
    font-family: verdana;
    font-size: 15px;
}


3. Learn JavaScript
JavaScript

JavaScript is a high-level, dynamic, untyped, and interpreted run-time language. It has been standardized in the ECMAScript language specification.



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4. Learn PHP

PHP: Hypertext Preprocessor

PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.

PHP Example
                                echo  "

PHP is Fun!

";
                echo  "Hello world!
";
                echo  "I'm about to learn PHP!
";
                echo  "This ", "string ", "was ", "made ", "with multiple parameters.";
                ?>
       
5. SQL

SQL (Structured Query Language) is a domain-specific language used in programming and designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).

6. jQuery

jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.

7. Bootstrap

Bootstrap is a free and open-source front-end web framework for designing websites and web applications.

It contains HTML- and CSS-based design templates for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions.

 Unlike many web frameworks, it concerns itself with front-end development only.

Source:https://idearules.blogspot.com/2018/04/you-can-learn-many-subjects-like-html.html