We discussed the periphrastic perfect forms in the thread on the perfect subjunctive (active).
Smyth’s Greek Grammar is a comprehensive and authoritative grammar of ancient Greek. It has been posted on-line. However, the on-line version is not easy to use. The hard copy is easier but you still have to know what you’re looking for.
The answers to some of your questions can probably be found somewhere in your Hansen and Quinn textbook. I don’t have a copy; maybe someone who does can point you to the right section.
I also have the feeling that maybe I am asking too many questions, but that PDF is really hard to use (I am very shortsighted), and I did not find the answer in Hansen & Quinn or from Google.
I will not ask that many questions in the future.
Sorry about the disturbance.
Btw, I am trying to make grammar sheets my own, in a more clear way. (put everything in order and in tables!)