Married and BIcurious

Ok so, I'm married (husband is incarcerated has 2yrs left) I've ALWAYS been attracted to females but never went "all the way" with one. Since kindergarten I can remember interactions with them. My husband already knows and we've talked about 3sums when he comes home. He's also open to me having a "friend" while he's away. My thing is HOW do I go about finding a "friend" and how do I not feel weird about being with her SEXUALLY for the first time? I.E area