Electrical Help!

I am about to put the roof spars on my benroy and am having SUCH a hard time figuring out the best way to run lights throughout the cabin.
I need something simple but HATE the battery operated LED lights! Id REALLY like to have a powered vent fan as well as some interior lights and light on the outside next to the doors as well as a place to charge come devices near the hear of the bed or near the tongue side of the camper!
Ive looked at the super simple electrical system but Id like something just a little bit more than that...
Can someone please direct me to a place where I can learn about how to wire AND what lights/electrical outlets I need to buy!?!?
I dont know what works with what!
I need something simple but HATE the battery operated LED lights! Id REALLY like to have a powered vent fan as well as some interior lights and light on the outside next to the doors as well as a place to charge come devices near the hear of the bed or near the tongue side of the camper!
Ive looked at the super simple electrical system but Id like something just a little bit more than that...
Can someone please direct me to a place where I can learn about how to wire AND what lights/electrical outlets I need to buy!?!?
I dont know what works with what!