Newbie question/advice

This is my first post but I have been following this site for a long time and would like to say Thank You for all the wonderful discussions and advice.

So I recently bought a 2007 Newmar Canyon Star and was wanting opinions on what maintenance I should do to when I pull it out of storage. I have had a travel trailer in the past but the Class A motorhome is much more intimidating than the trailer for some reason. I bought it from a nice older couple but the older man seemed to think that he knew everything and as I found out by having to spend money to rewinterize due to him not winterizing correctly or at all that he really didn’t know near as much as he thought. In his defense they never winterized it because they were gone to warmer climates before they needed to.

I know I need to give the roof a good bath and give the inside a good cleaning as well. Not for sure about too much else. Was planning on doing an inspection on the roof after I clean it and sealing anything up that looks like it may need it. Are there things I should lube and if so what should I use? Anything special I need to do to dewinterize it?

Thank you all in advance for any and all advice/opinions!!!!!