Welcome to MS.
I am glad you have found this place of healing and support.
In addition to your individual therapist, your county rape crisis center may have a group for males. If they do not currently have one, you may be able to get them to create a group, though that may take some time. You can find a list of the Rape Crisis centers here
There are several books you might find useful.
Abused Boys: The Neglected Victims of Sexual Abuse by Mic Hunter
Victims No Longer by Mike Lew
I am certain others will share titles they have found useful. You can find these titles, and others here at the bookstore
Take your time and look around. You do not want to trigger yourself by reading too many posts at one time.
At your own pace, read the boards and wander into chat. The lounge (chat) is open 24 hours a day though it isn't always populated.
We also have moderated chats called Healing Circles.
They meet on Sunday and Wednesday evenings at 9pm eastern time and one on Tuesday at 19:00 UTC (European and African time zone) which translates to 2 PM Eastern US time zone. The Healing Circle on Tuesdays is scheduled to resume in January.
Again, welcome to MS.