Head down to sears or something... find a decent socket set with combo metric/imperial some brand that is good quality and have a lifetime warranty is a good idea...
An allan key set is good to have as well
then get a good plier set.. bent nose, needle nose, cutters, slip joint or vise grips
and a screw driver set or at least a decent screwdriver with a magnetic swapable bit end
a dremel with flexible head attachment is another good one...
and a torque wrench is another nice to have tool... in fact I'd probably say if you work on vehicles it is a must have...
after that you can pick up secure torx bits as you need them.. other sockets as you need them
other than the case the tools come in, you could get a craftsman tool box to hold a lot of it...
a soldering iron is another one that is a nice to have...
Basically if you get one of those Big Craftsman tool kits that include most of the above, you're good.... after that just add stuff as you need it..
I've tried cheap tools and they are crap... just get the stuff with the good warranty and you shouldn't have problem with them turning to sh!t on you
other brands may work as well.. I just chose craftsman because it is available almost anywhere (canada and usa) and they generally have a good long warranty... if others do the same... then try them too...
Something like this would be a good start... and I am sure you could get something similar for a lot less.. but it has most stuff you'd need...
http://www.sears.com/shc/s/p_10153_12605_00941206000P?vName=Tools&cName=Hand+Tools%2C+General+Purpose&sName=Mechanics+Tool+Sets