I'm guess its seal grains - prime- sand- prime again?- sand- colour several coats- sands clear- then wet sand and buff? Do you really need to use a buffer or could it be done by hand?
If you're doing a trans finish, then no primer. I mainly grain fill (when needed) seal -> color (usually just about 3 coats - you don't need a lot) -> clear -> wet sand -> buff. Some people like to buff by hand; I'm not one of them; you're not going to get all of the fine scratches out by hand.