Well first things first.
Welcome t iboats. We always like to welcome new members to iboats and help if we can.
Okay, as far as manuals go, buy the manufacturer's shop manual for the engine. After market manual types try to cover too many models and therefore leave out important info that covers all the different engine specifically. So buy the factory engine model, year and HP specific shop manual. The absolute best source for any engine rebuilder.
After getting such an engine manual, if you have any questions, post them here and maybe we can answer your questions.