3D basics: I really fell down the rabbit hole in this respect and very quickly found a whole bunch of information about the ‘art’ of 3D printing and other basics. While I can’t say I’ve mastered anything, I suggest that you consider these URLs as a jumping off point: Tom's 3D for basic information and 3D Printer Anatomy: 50 parts in 5 minutes (Basics).
Reviewer's Observations
It should be noted that these two aftermarket sets are intended for the Tamiya F-4B kit (#7600). This is important as the locating holes are intended for this Tamiya kit and in the case of the exhaust nozzle upgrade set, the DW set is potentially intended for additional ‘C’ or ‘D’ versions as well. The great advantage is that this upgrade nozzle replaces the seven part one in the Tamiya box.