Some contend the TBucket is a starter car but it is actually more difficult for a beginner with limited knowledge and skills to build and end up with a decent car than a Model A, 32 or later Ford V8 or a Camaro, or pickup truck.
To build such a simple car requires a good eye to keep proportions correctly balanced and patience to do all the mockup work each step along the way to insure a good product rolls out the garage door two or three years down the road.
For best results buy a body frame package from a single manufacturer in as complete or simple a form as your wallet dictates. Spirit Motors, Total Performance, Speedway Motord and others have these options available.
If you want to scratch build the car, use 2 X 3 X.120 or .180 wall steel rectangular tubing (2 X 4 tubing is cool too if you're using a big heavy torquey engine) available from your lcoal metal yard in 20 foot joints.
Buy the body of your choice including the turtle deck or pickup bed if you choose the 23-25 style.
Then mockup your chassis using 2 X 4 wood rails. This will give you a visual on where your body/bed/deck will be or needs to be and allow you a simpler mockup than using your steel and cutting, welding, cutting, rewelding, etc.
I could say more but I guess you'll have to wait for the book.