Advice for a new mechanic building his toolkit?

What kind of toolbox am I going to need starting out? Any recommendations for an economical, solid box?

I am also trying to pick up the rest of the tools I will neee, where should I be looking? I check pawn shops, etc. I have most of my basics, but can anyone recommend somewhere that I can find affordable tools to start out?

Advice for a new mechanic building his toolkit?