ok 92 Chevy lumina..... Help

If you "don't know shit" you're in way over your head with no hope of
ever reaching the surface. Changing spark plugs on a Lumina isn't easy,
simple, or fun, especially 14-year-old spark plugs that have probably
never been out of the engine.

Most of them are probably rusted in permanently.
The three on the back are impossible to reach without practically
removing the engine from the car.

Once you get around those two issues, it's all a matter of having the
right wrenches and, "rightey-tightey, lefty-loosey."

This is definitely not something a naive young girl with absolutely no
mechanical ability or knowledge can tackle cold turkey. Now, if you
grew up turning wrenches on the old family car with daddy, then that's
a different story, but it doesn't sound like that is the case.

My suggestion is to either bite the bullet and pay to have it done, or
find a mechanic to date.

HOWEVER, if you're doing this to cure an engine problem, you're
probably wasting your time.