I agree with the other posters to read up on polyamory. The biggest skills to learn are open communication, dealing with jealousy, and meeting people's needs.
I would suggest that if you find a bisexual guy that you don't try to push for a relationship with him and your wife. Let a triad form naturally if it does. There are many possibilities between a V and a triad that could develop. I think a triad that is pushed together has a better chance of breaking apart.