There is a decent website from a pharmaceutical company: prostateinfo.com.
It does a decent job of going over the basics involved in screening and explaining the treatment options.
My one big criticism is that is out of date when it comes to robotic surgery and how accepted it is, making up about 30-35% of all radical prostatectomies currently.
I would add HIFU as an experimental therapy and make laparoscopic and robotic procedures an accepted form. I know that there are more robotic prostatectomies done than perineal ones, and pretty sure there are more laparoscopic prostatectomies done in the US than perineal.