Learn about character sets used in HTML5. UTF-8 is the default charset of HTML. We’ve also looked at some other character sets such as ASCII, ANSI, ISO-8859

URL Encode in HTML - Process of encoding character of URL to corresponding ASCII characters globally understood by the browsers. See URL encoded characters.

Learn about HTML Symbols which are arrows, mathematical operators, technical symbols, or any symbol might not be present on a standard keyboard.

Learn about HTML Entities and when to use them. learn HTML Non breaking space, Reserved Characters, character entities and diacritical marks.

HTML Style Guide - Learn abolut HTML Coding conventions and best practices to follow such as declaration of document type, use of lang attributes, closing tags, use of lowercase names for attributes and elements, quoting of values etc