Howdy Bama and Welcome --- Best bet is to start by reading as many "build threads" as you stand. There are many different approaches to converting a bus but personally, I think the place to start is with a vision of how you want to use it. Something that will be a tiny home in northern Canada only driven a few times a year will need to be very different from a rig you intend to put 100,000 miles a year on going from coast to coast. Good news is...you'll find examples of both (and a lot more) right here with pictures to boot.