Please, if you find expired links, let me know about them and either I will find the new one or, at least, get rid of the false link .. I don't have any time to keep a check on the links myself so I rely on feedback from users.
Suggest you have a read through the relevant bits of the regs, eg FARs, to get some basics. Then just start a thread on the bit you want to pursue and we will go with a to and fro discussion until you are happy that you have the level of information you need .. in the process others learn as well sitting on the sidelines ... please, don't be hesitant to ask questions .. there is a cadre of folk here who are frustrated teachers and instructors .... and there are a lot of folk who are very well heeled in the knowledge and experience stakes ... use us .. that's where we get our kicks.