The proper way is to take the wheel off, take the brake rotor off, take the hub off, hammer out the old stud, and then go to a machine shop and have the new one pressed in.

The easiest way is to take the wheel off, take the brake rotor off, hammer out the old stud, put in the new stud (a little JB weld never hurt anyone here lol), and you're done.

I never even use the JB weld, I just put the new stud in, put everything back together b/c once the lub nut is on the stud, where's it gonna go, ya know?

Hope that helped a little bit