Hi there!
Welcome to the wonderful world of Thundersplace. Within these walls are heaps of good information at your disposal, all you have to do is have patience and a desire. As far as the terminology used, there is a glossary somewhere. It never gets put back where I find it, so I suggest you do a search for the glossary. Honest its around here somewhere, it should help with understanding the terms that are used quite a bit. I still get confused on some of them and I’ve been here almost 4 years.
Oratom is correct, no one can tell you what you will gain or when you will gain it , it’s very individualized. I can suggest you follow the newbie routine and get your penis accustomed to the exercises and not to over do it. We don’t want injuries, those are bad. Do a lot of reading, and I think you already have done some, and then read some more. Use the search function, its a life saver, and if you still can’t find an answer, ask, we will answer. Some of us, me included, get cranky when you ask a question that was just asked, that is why we suggest you do a lot of reading, but we will always answer the question, even if our answer is do a search ;) .
Once again, welcome to Thunders.