Sounds like to me that your going to serious about maint...
If you haven't done so already get the owners manual for every component you have. Also get manufactures owners manual if possible, just for giggles. Many say in so many words to "follow manufactures directions" The maint requirements should be listed and also gives an "exploded" view that helps with fixing things. Print out and make your own file for what you have and carry in your RV. Crawl underneath and find axle model and find out if you have ez-lube or never-lube or whatever to learn how to service them.
After you get on top of your maint... for me twice a year (spring and fall) I can do about everything in 3 or 4 hours (and I have a very long list and have 2 RV's.) I enjoy it and find it so much better going down the road what is going on the my unit. And don't get taken advantage of by RV fix it places to often.
If you now nothing about which end of screw driver to use, join a RV club, go out with them and they are either eating, talking about somebody's RV's or fixing them, chance to learn a lot.
Hope this helps.