what's the best way/order to record?
should drums go first then bass then rhythm then lead then harmonies then vocal?
is better to record drums and vocals live?
to click or not click?
should all tracks be full takes of the song?

thanks in advance for answering my probably obvious questions
Most people record drums first, preferably to a click. You can do full takes on songs if you want, it's not necessary if the guy who's recording knows what he's doing.

What do you mean record drums and vocals live?