so when I put in the aneros it feels good but I don’t feel much in the way of pleasure but I noticed that if I begin stimulation of my penis after I’ve decided end my session it feels as if my prostate swells and makes better contact with the aneros. Could it be that I’m not getting aroused enough? It’s difficult for me to get aroused without touching my penis. So I think I need get acquainted with other parts of my body. But I’m not sure how that works. How can I get more aroused without touching my penis?
Could it be that I’m not getting aroused enough?
Arousal is more than just a physical state, it is also an emotional and psychological state of being. The thread Are you "aroused"? addressed a small aspect of the physical side. The thread Aneros, Arousal & Abstinence started to address the emotional and psychological side of the discussion.
It’s difficult for me to get aroused without touching my penis. So I think I need get acquainted with other parts of my body. But I’m not sure how that works. How can I get more aroused without touching my penis?
First it might help to read @Cockadoodle ’s thread Penis, NOT and @rook 's thread Whole Body/Whole Mind - the mental side & @SteelColdiron 's thread Aneros: The Essential Mind State for a little insight. It might also help you to read @neros 's post The truth behind how to "rewire". Those threads will point out the significance of the role your mind plays in generating arousal over simple physical stimulation. When you begin focusing on the mental side of the arousal equation I think you will make significant progress.
IMHO, it is mostly a matter of changing your point of focus for sensory input. We men have got such a deep attachment to penile stimulation from years of masturbatory practices that we get into a rut and have difficulty branching out to alternative stimulation patterns. The switch to prostate based stimulation requires a paradigm shift in thinking and attitude but once you make that shift a whole range of erotic possibilities becomes available to generate increased arousal levels without involving penile stimulation.
You might also find some helpful tips for elevating your arousal in the thread Identifying Facilitators to Progress.
Good Vibes to You ! 
Thanks @rumel for the link to @neros’‘ post, from my point of view one more absolute must read. Especially his suggestion of an only-one-second-fantasy to get things started led to awesome results. Great read!
This is great advice I guess my problem was that I was worried that wasn’t doing it right. But I see now that it’s pretty hard to get wrong. I’ll have do some work changing my mindset.
@rumel thank you for the links and the advice. I often go into a session feeling that I’m perfectly prepared for a mind blowing session: I’m dead relaxed, I distracted, focused only on pleasure without expectations, PC muscles strong and breathing rhythmic.
But the prostate it seems, is like a lover. Without an arousal connection, it is not interested in making love to me, and the best orgasms I get during those times are nowhere near what they could be if the emotional component of high sexual arousal was supercharged, joining body and mind. It makes sense. This is not penile stimulation to ejaculatory orgasm; this is a sublime experience tapping into pleasure and emotions that cannot be conjured from an attitude of simply ‘I want an ultimate orgasmic experience, and I can obtain it simply by mechanical manipulation of my body’
in short, thank you and all other contributors on this post.