There are a couple of ways to strip it at home. One would be chemical stripper.
Keep in mind that if you chemical it you need to remove all the filler as it will be contaminated.
You could also sand it with a 8" orbital sander with 80 grit, I have used 40 grit also depending on how many coats of paint the car has. Some will say that is too course, but knowing how much repair work needs done on the individual car it usually is not a problem.
Either way you go be sure to not get to far a head of your self if time is a problem.As soon as you have a few panels done use a good metal prep,and then prime with a good epoxy primer like DPLF-50. You can then do any metal or filling work that needs done with out the fear of rust starting.
Try to stay with one product line on the refinish products.