Below is a list of websites/programs that I have found extremely useful for web-design.

Actual Search & Replace - Awesome program that replace one user-defined string with another.
CSS Zen Garden - Beautiful site showcasing CSS layout usage. This is where I was introduced to CSS!
FlashFXP - My favorite FTP program of all time.
HTML Code Tutorial - TONS of html coding goodies, easy reference!
NOP Shopping Cart - Great shopping cart script, what's even better is it is free! I used this cart at DrinkDrankDrunk.org!
Perl Code Editor - A must-use when editing Perl, Javascript, or any other coding, un-install Notepad today!