Welcome ready2rv to the Newmar forum and irv2.

If you have a gas & maybe DP coach a panel on dash board, in front of steering wheel, will lift up just pry a corner and it will pop up. Your fuse panels are under it.
You have fuse panels for chassis on fire wall under your hood.
You will also have a 12v fuse panel near your load center, in bedroom cabinet???, that will have your interior lights, water pump, refridge etc,etc fuses.
As to manuels best place to find info is right here, no problem, and go on FIND above and leave check mark to stay in this forum.
Congrats

on your new MH many safe and happy miles ahead.