Here are some of the most useful sites that I've found. They are amazing, especially the ones with lots of pictures, graphics, and animations!!
An amazing site, contains animation, art, & all chemistry stuff
Wonderful site- There's animation!!
Scientific principles- There's graphics tables...etc
What are polymers & why are they interesting?
CEH Astract Biodegradable Polymers
Thin Layers of Polymers- Paints & Brushes (There's cool animation)