It would be great if someone could make a "practice app", that is an app that has already been made portable. It could include a text file with what registry entries it adds and how to make it portable with step by stp directions. It would really help those not-so-sure coders get started!
I see what you mean, but that only helps so much. There are many different programs and that means many types of interaction with the host system.
Hence the NSIS readme/tutorial and the source code for every launcher included in the downloads. Also if you look around here in the forums you will see that people are more than willing to help. Ah, the joys of an open source community!
~Lurk~