1) What's the emergency? Is something dying?
2) You tell us what's where but don't have a clear question/list of questions
If you're just looking for information, I get that (but next time don't use the emergency tag), but what information are you wanting? We can't help you with "Main issues" if you haven't listed what your main issues are. Help us help you, tell us what's unclear in your research, or what you want to know more about. That will greatly increase the quality of information given to you, and won't be nearly as overwhelming. Without a starting point, this thread will quickly become overwhelming.