I'm new to all of this craziness !! I have been looking at Teardrops for a year or so and now I'm ready to start my build

I will have a lot of questions I'm sure. One off the top of my head is my idea of painting my wood build with colors of my choice when the time comes, can I use a good exterior home paint or do I need to use sealer and paint ?? This site is amazing thank you all !!