I would buy a complete bike... It adds up unbearably fast building one piece by piece. Get the bike you like, change the wheels out and do the rest as your budget allows. Here are a couple links for bike info and a company that sells all kinds of bike parts
- excellent bike info how it works together
BicycleDesigner.com sells custom bicycles, bike parts, lowrider bikes, cruiser bicycles, chopper bicycles, and trike parts.
Bicycle Designer Notes - simple bicycle parts applications
- all kinds of notes on their stuff