Meet at the beach near my house, or a park near their house. Have a nice long talk and walk, see if they are interested.
Have them meet my room-mate and (if a couple) meet their's. Mostly talk the first time, and get to know (feel out) each other.

ing on the first meeting can be ok, (even some touching) but I'm more into being safe, until I feel comfortable.
Then set up more meetings that include fooling around and getting closer, showing toys and maybe including partners if we deside that is where we want it to go.