I have to agree with AG below. For the beginner, start out slowly and protect thy anus. Over time, you can grow your toy in size, and possibly find even more pleasure. And dont forget, you can't ever use too much lube.
Now, for play, I'm up to a nice sized penis-shaped dildo. AND, I would like to meet the woman who would peg me, and teach me the 'pleasures' from her perspective. It did happen with a girlfriend nurse in San Francisco a few years ago, but it wasn't the best of experiences. I was in gr8 bottom space leading up to losing my anal virginity, and she didnt think of giving me an enema beforehand.
Me? At that point I will admit that I was not thinking. My juices were flowing, and my brain was on hiatus...
Nora, the nurse, became upset with the 'shit' on a stick, and embarrassed me. And, that was sad. It was a loving and exploratory act on her part; but, the preperation was not proper. The end result...
In most things in life, love, and business - preparation is 90% of the task at hand; 10% is the follow-through. and, dont forget the little details...
I say go fer it! I would do it again with the right woman.
I'm in Texas and have not met her too date. We are in the Bible Belt, and it is a little conservative overall. AND, because of life, I cannot be pro-active by going to play parties and play-spaces in search to meet her. I am not married, but there are other considerations.
SSSOOO, it might take a little time to meet the woman of my dreams. And, that's okay; I'll keep the front porch light on, and an eye open so I will not miss her.