I know this is an ambiguous answer but . . . do what you think will create the most complete and most useful tutorial. If you have one main tutorial, and then branch off into mini-tutorials for any complicated steps, thats more than fine. Its quality over quantity.
Keep in mind that its unlikely for someone to ever copy your robot 100%. They'll instead borrow ideas here and there, so keep that in mind.
For example, no one has ever made airman00's butler robot. But a *lot* of people liked the section on setting up voice control for it, etc.