Protecting paint and chassis

[240sx-101]

after I buy a car,,, I have a idea that new paint job for my car.

So I just thought the best would be find a Shop and ask.

The purpose would be Protect chassis and looks better.

is there a kind of famous brand? - I think

choice of paint would be critical...

Also,,, What kind of things are recommended to keep good

condition of the body? (what I only can think is good paint and

wax...my short knowledge there are some more TIPS?)

I just jeard about

powercoating of chassis (though yet I have no idea what it is).

how is it?