Welcome to the forum... Here's the deal on the manuals. You can search here to see if your original owner's manual is listed:
If it is not, get the serial and the model numbers for your appliances and other things in the RV and do a google search for that model number and get the owner's manual from there. Usually the RV owner's manual does not give you a lot of information and is, as a general rule, very general in the information you get. Dutchmen added this section recently and it looks like they are expanding it with more information and owner and operation manuals, even some parts manuals.
AGAIN, congrats on your purchase, good luck and don't be afraid to ask questions and most importantly, include pictures.