A tool kit as they are sold right now will not have the tools you need, unless you bike is probably five years old or less, since the contents of kits is changed over time to reflect the tools needed to repair or maintain whatever the bike manufacturers are currently using.

That's why most experienced Bike DIYers will suggest to you that you buy what you need to work on your bike as you go along.

For a older bike you need a set of cone wrenches to service the wheel hubs. If you have a newer bike, you'll need different bottom bracket tools from people that have bikes with square taper bottom brackets. People with conventional loose ball bottom brackets need different tools from people with cartridge bottom brackets.