Welcome to the forum Pat. I would suggest that you post your request for help in Keystone Questions or the Travel Trailers section of the forum rather than in the New Member Check In. You will most likely get a better response to your question(s) in one of those two categories. (Please do not post in both, thanks)
It sounds like you bought your Bobcat from a private seller and I am wondering if, at some point in the sale, did he offer to do a walk-through with you or did you ask to be shown how the various systems work? Keystone's Owners' Manuals are not overly helpful as they are very generic and do not go into much detail about the systems you asked about. Even if one had been available, you would not have found it very useful.
Are you looking for detailed, step-by-step information on how to operate all of those systems that you mentioned in your post or do you have some knowledge of this RV and its systems? We'd be glad to help you but knowing where to start would help us help you.
2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax