Whether you chop or not is totally up to you. I have a 33 Ford Pickup that I decided not to chop. Once I made the seat frames and got the seats in a comfortable level, I decided not to chop due to head clearance.
As for help . . . if it's your first time, good luck. You may want to look around for "How To" books or videos to help get started. You can try "Classic Motorbooks" 1-800-826-6600 and order the book #130730AE "Chopping Tops" for $19.95.