My opinion? As a former USAF aircraft mechanic, 35-year motorcycle shop owner/mechanic and now bicycle mechanic I'd tell you DONT BUY CHEAP TOOLS! Buy the very best tools you can afford. If you can't afford good tools, wait and save, until you can afford them.

Don't buy a tool kit as there are tools in it that won't be of use to you. A good set of hex wrenches, a good set of flat blade and cross point screwdrivers, a chain whip, the correct cassette removal tool, a good shop grade chain tool, pedal wrench, an excellent cable cutter, a bottle of your favorite chain lube, tri-flo type oil, a tub of grease, a copy of Park Tools Big Blue Book of Bicycle Repair will be a good start and allow you to start learning how to maintain and work on your bike. As you gain experience you'll find what additional tools you will need and want.