AJAX – Asynchronous JavaScript And XML: AJAX is not another language and there isn’t really anything new to learn, it’s just a change in the way developers create websites.

HTML – Hyper Text Markup Language:

XHTML

CSS

PHP

ASP

PSD

GIMP

SQL

XML

JavaScript

DOM

RSS

Forms

HTTP

FTP

SMTP

Selector

Object

Method

Function

Inheritance

TCP/IP

W3C

WHATWG

IRC