Use bright contrasting colors like this
Use alternating Capital and Lowercase letters through out a whole page like this
Fill up your main page with tons of banners, pictures and buttons
DO...
Use basic colors with either white or black backgrounds
Use techniques like adding special symbols
-it wears on the eyes
-it gets old really fast
--it takes waaayyyyy too long to download and may look cluttered
-it makes your job easier, things tend to clash less, text is easier to read
Use the same colors, fonts, and icons for groups of related pages
-it makes your site look more professinal