Step 1 ... Tearing out the inside of your van and preparing for the build to begin. This was one of the more frightening things that I did. I was basically taking a perfectly good van and ripping it apart to step into the unknown. Once I took everything apart it became more apparent I needed a better plan for the structure, which is one of the other videos. Be sure to make a plan of what you want to do though because removing something you need isn't that easy to place back after.
First things first, get into safety mode. Gloves, eye wear and a mask would be ideal. I mentioned it in the video, but the ceiling of your van is going to be fibreglass and if you have ever pulled on fibreglass you'll learn very quickly how uncomfortable it is and the next day you'll feel it even more. Breathing that stuff in is super bad as well. Least that is what my Dad told me after.
Most of your vans interior will be held together with clips. Don't be afraid to just pull on them and they'll pop off. This is where you'll be happy you have gloves and googles because things will be flying everywhere and I cut open my hand a few times at this point.
When it came to separating the front from the back I left the front area as it was and just cut the roof where I knew I'd be ending the camper at the back. It leaves a bit of a rough mess, but in the later videos you'll see how I finished it off so it didn't look like you just cut your ceiling out.
All of the bolts holding the seat belts down you'll likely have to take to a collision body shop and have them remove them. They are in there pretty tight for good reason. When I got the fan hole cut in the top of my van I did it then. I do recommend a collision shop over an auto mechanic though as they are used to this type of thing.
I also kept my side doors that slide as they were. I knew I wouldn't even know where to begin on finishing those if I removed the molded sides that came with the van.
Happy taking things apart and be careful to not cut through any of the electrical!!! Seriously watch out for that. It is an expensive mistake.
I do wish I had taken more photos at this point, but when you go through the other posts you'll see more pictures.