There are links throughout the tutorials to websites with resources that help with learning HTML and CSS, or with making web pages, or where you can find out more information about the topics. On this page you will find a complete list of all these resources.
The W3C Markup Validation Service - checks that your web page code is well-formed and meets the standards of HTML 4.01, XHTML 1.1 etc.
The W3C CSS Validation Service - checks that your stylesheet conforms to the standard of CSS 2.1 and CSS3
WikiMedia Commons - a "...media file repository making available public domain and freely-licensed educational media content (images, sound and video clips)". i.e. the place to source copyright free assets for your web work.
Colour generator for looking up hex colour codes -
Selectutorial - CSS selectors. Selectors are one of the most important aspects of CSS as they are used to "select" elements on an HTML page so that they can be styled. Find out more about selectors including the structure of rules, the document tree, types of selectors and their uses.
Listamatic - Can you take a simple list and use different Cascading Style Sheets to create radically different list options? The Listamatic shows the power of CSS when applied to one simple list.
Listutorial - takes you through the basics of building background image lists, rollover lists, nested lists and horizontal lists.
Floatutorial - takes you through the basics of floating elements such as images, drop caps, next and back buttons, image galleries, inline lists and multi-column layouts.