Best advice I can offer from working on all my own cars:
Never by cheap tools
Always use the right tool for the job
Take your time, bolts rarely need forcing. If they dont move you are probably doing something wrong, or you need to use better penetrating oil.
Research research research
Ask advice of mates, garages, forums
And most of all if you're still not sure seek help. Whether that is asking a mate to stand over you or giving it to a garage.