I'll add to what Mike posted.
First thing, concentrate on metric tools.
Whatever torque wrench you buy, calibrate it. pretty simple to do just need a bolt that won't turn and a something of a known weight. 10 lbs or so should be fine(barbell, gallon of water, etc.) you can find out the details of the math on the net or youtube.
Breaker bars. get a 3/8 and 1/2 in drive. ratchets shouldn't be used for loosening stubborn bolts as it can wear out or break the ratcheting mechanism.
Ratcheting wrenches aren't a necessity, but come in handy. Especially in tight spaces.
T-handle allen wrenches with the little ball on the end.
allen sockets. especially for the larger allen bolts(8mm and up)
Soldering iron.
Loctite. not a tool, but very useful.
I love me angle grinder :robssmilie: