Start with your vehicle's wheels flat on level ground.

Grab your trusty lug wrench.

Place it on one of your lug bolts. Note I say bolt, not lug nut. This will be explained later.

Yank on the lug wrench, it may take a lot of force to break the lug bolt loose!

If you need some extra force use your leg, or even stand on the lug wrench being careful to keep your balance. This should break it free.