Microchip ( http://www.microchip.com/ ) -- Get your chip specs, app notes, development tools, and product overviews of all PIC devices

Digi-Key ( httP://www.digikey.com ) -- Good source for PICs, simple parallel port programmers, and other homebrewing components

BG Micro ( http://www.bgmicro.com/prodlit.htm ) -- Surplus house for LCDs & stuff

DIY Electronics ( http://www.kitsrus.com/ ) -- "Do It Yourself" kits have lots of PIC-based kits and tools