The first step is the wash. I started this thread back in February it will give you all the info you need.
Foam Cannon and Air Compressor Recommendation
As for claying and polishing and the next steps, I am still working on that. For now I just threw on a coat of really good wax that smells amazing and puts on a gloss like you would not believe. It's supposed to be my final step but I skipped a bunch of steps lol.