As well as obtaining information online, I've found it very worthwhile to read good relevant books on the subject.
"Prostate Cancer Prevention and Cure" by Lee Nelson MD is very comprehensive and covers diagnosis, treatment options, lifestyle changes etc.
I am currently reading the book "Beating Prostate Cancer: Hormonal Therapy & Diet" by Dr Charles Myers which also covers various treatment options, surgery, radiation and hormonal treatment.
Both of these books are relevant to you, especially as both authors have themselves undertaken treatment for agressive PC.
Lee Nelson now lives in New Zealand: I believe Dr Myers still works in the Prostate Cancer field in US.