If you use the accelerator ZFX with Zaino you can do multiple applications every 20 minutes instead of having to wait hours. The instructions do seem daunting but this is what I did from reading all their instructions for that very first polish. All in 6 hours for that first polishing. The numbers are the Zaino product numbers.
Wash car Z-7 (or use dawn if removing old wax)
clay bar (skip if not needed, but paint now smoother than a baby's bottom)
wash car again Z-7 (skip if no claybar)
gloss polish Z-6
polish for scratches Z-5
gloss polish Z-6
optical polish Z-2
gloss polish Z-6
laser beam finish.