Welcome to the forum.
Everyone starts somewhere/sometime, so do lots of research--when you get focused on a brand/model, check out the owners forums for that unit, should be lots of good info pertinent to quality and factory service.
We'll help if we can...
2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired