Well you can always start with the "Dating & Friendships" area (Use the "Forum Jump" menu, bottom of this page, right hand side, to get there). I think you can post personals in there if you want.
Other than that, you can just do some reading and perusing of the various threads on all the boards in this forum. See what interests you. If you find that some questions come to your mind, go ahead and ask. Or express any thoughts or concerns you may have. That's what we're here for.
Another good website to check out (in addition to Polyamory.com) is Franklin Veaux's poly pages
. Also, while you're here, check out the "Golden Nuggets
" threads (especially http://www.polyamory.com/forum/showt...6870#post16870
). They have answers to many of the classic questions.
You have a good marriage and a beautiful family. Polyamory can be a part of that, just give it lots of love and some time.
Welcome, MJ and TJ.