HTML/CSS Sites:

CSS Help - Beautify Neopia
- A little Green Kougra with a twinkle in its eye, acts as your personal guide. Here you can learn eveything from how to add a background in your shop and changing font to adding pictures and tables.

The CSS Cafe
- This site has step-by-step instructions for starters, and it is color coded so you can easily tell what you are able to change. This site offers many helpful tips like background codes, a complete color chart, and much more!

Neopets Related:

Neoitems [dot] Net
- The Quickie way to look up items of a certain kind. Plus brows through a missing items archive, see retired items and old items that are now "gone" forever!

Soup Faerie
- This fab site with lots to use to jazz up your account such as backgrounds, premades lookups, neoHTML guides etc. Also has helpful game guides and general tips too!

Premade neoHTML fonts
- They've got awesome premade fonts to match almost every avatar out there!