Drag Tuning

Hey guys im new to the forza world and was looking for someone to kinda help me a little with tuning.
First and foremost i love the drag racing whether its on the drag strip or on one of the tracks.
I am wanting to build a american drag car and i am kinda confused on which one to get actually all of the youtube videos and everything i have read contradict eachother. Must be rear wheel drive also.
I also need help with the tuning and making it hook. I am tired of buying the tunes and not being able to tweak them. Also i am not asking for someone to give me a free tune or anything like that i just want help.