What prostate massager do I need?

Hi there. Recently i discovered anal play. However, Im a straight married male in a vanilla marriage and dont have any experience with anal play and prostate massages. I read about prostate milking and a super O orgasm. Id very like to experience both. Ive been experimenting with a prostate massages. I very much enjoy the feeling it gives and my climaxes have been very intense while using it. Id like to know how to proceed to experice a non-penile orgasm or a super O. Als id like to know if its possible to milk ones own prostate and how to do that. Thanks!