Here is a link to just about all the information available for your TT:
Cherokee Travel Trailer Downloads by Forest River
To learn how to operate things like the water heater, A/C, heater, microwave, awning, etc, you need to get the manufacturers name and the model number of the appliance, then go to each manufacturers website and download an owner's manual for each.
The document you are looking for; an owner's manual for the TT itself that explains what all the appliances are and how they work, doesn't actually exist. The RV owner's manual is more a collection of warnings, warranty information, and general information that applies to all the RV's of that manufacturer.