My thoughts on this subject... Buy the best tools that you can afford. At the moment it would seem that since you don't own any tools you probably are not proficient with a vast collection of tools. Therefore, a 3/8 set of sockets (shallow, deep, torx, hex), a set of screwdrivers, a small collection of pliers (slip joint, needle nose, locking, dykes), a ball peen hammer, a deadblow and a 4lb engineers hammer, and a couple of pry bars should be enough to get you by as you progress and your needs increase.
You may find that those tools do everything you need and can support any project you're willing to tackle. Otherwise, it's a good start and that good start will be with good quality tools.
I'd rather have a small collection of good tools than a garage full of junk.
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