Hi John, and I too will welcome you. You have come to a good place with immeasurable help and knowledge from those that have "been there, done that" with respect to being told we have PCa, learning about
the beast, deciding on a treatment path and moving on.
Please keep in mind that with your statistics you have time - time to learn about PCa and the various treatment options - so don't panic! As others have already stated, you'll go through the various emotional stages of shock, disbelief, fear, anxiety, guilt, sadness, grief, depression, anger, and more. Each person may have some or all of these feelings, and each will handle them in a different way.
BTW the last two sentences are from the American Cancer Society's "The emotional impact of a cancer diagnosis" - here's the link:
http://www.cancer.org/treatment/treatmentsandsideeffects/emotionalsideeffects/copingwithcancerineverydaylife/a-message-of-hope-emotional-impact-of-cancer
I would also suggest getting a 2nd read on your biopsy slides from a highly accredited/experienced lab such as Bostwick and Epstein.
Along with forums such as this where you can learn from people that have and are going through what you are, do as much internet research as you can. When I was at your point in my journey I encountered the "paralysis by analysis" syndrome as I was spending several hours a day doing all of the research and reading as much as I could - but that's o.k. as it will put you in a better place in terms of deciding your choice of treatment - or AS if that's something you want to consider.
There are a number of great books out there as well - in addition to Dr. Patrick Walsh's "Guide to Surviving Prostate Cancer" I also found Strum and Scholz' "Invasion of the Prostate Snatchers" to be incredibly helpful during that part of my journey.
If you decide on going down the treatment path you will also want to talk to and if possible meet with as many of the medical experts in the different treatment approaches as you can. When you do, be sure to ask for their specific outcomes post treatment - % regression free, continency (and have them define what "continent" means - to you and I it means NO issues, while others may qualify that with "only one pad per day" or "only when straining") - same goes with ED. They all have these statistics and if they say they don't or are unwilling to share that would be a cause of concern for me. You mentioned you are currently in the "get it out of me" phase - I was there at an early point in my journey and I would wager that most of the guys out here went through that as well. Some stay in that zone and others don't - again it's all about how we feel individually.
As part of my journey to learn about the various treatment options I downloaded, purchased, and copied a number of studies and results that I would also be happy to share with you, so if you are interested shoot an e-mail my way and I'll reply right away.
We are all out here to help - my very best wishes to you in this journey.