How can I use this site to get answers and clarification on game rules from Fantasy Flight. I am interested in several games besides the ones I own but will not buy them if I can not have rules questions answered by the designer and/or manufacturer.

Every game they publish has a discussion forum. Go to the game you're interested in and search through the existing threads to find the answers you want. If that doesn't work, ask your own questions in the appropriate forums and I'm sure they'll be answered promptly.