I've been mooching off my dad's tools and I'm getting sick of it so I've finally decided to.. buy my own.

He has something against keeping his organized so they're just all over the place and half of every job is finding the darn tools to do it with, plus I don't live with him so it would be a lot more convenient. But anyway, I'm not sure what to buy first. I have socket set but it's 1/2 american, half metric. I figure an all metric would probably be good thing to start, and a torque wrench cause it's got all sorts of uses on a car. I want to get a compressor and some air tools, but I really don't know much about them. I've just been using hand tools all my life. If anyone can answer some questions about them like which ones are good, how big a compressor I'll need and stuff that would be great. I did a quick search but I'll try again in a minute. Another thing I think would be pretty useful is a spring compressor since I do a lot of suspension work. What else would I need and what brands make good tools that I could order online for relatively cheap or buy at Sears/somewhere similar? I don't know anything about tools besides how to use them.

I just really need the common use tools cause if I don't use it much then I'll just use my dad's.
Cliff Notes:
Going to buy torque wrench, metric sockets, spring compressor
Considering air tools
Need info on good brands and other commonly used tools