In this video you can find some information about insulating your van for temperature and sound proof control.
I show to you some insulation types and actually put layers of material in my van during campervan conversion
It has 5 parts: Solar panels, Batteries, Charging controllers, Wires & Power calculation. After watching this 35 minute movie you will know all the basic needs to choose and install solar power in your van a small house.
This video made for answering all basic solar theory question before i publish actual video of mounting solar panels on my van. Enjoy!