Oh OH! finally a topic I can help a bit with. Freemasonry in continental europe can be fairly elite and invitation-only. In the US, not so much. Freemasonry is one of those things where if you are looking for job hookups or some other advantage you will be disappointed. Most lodges have fairly mundane business meetings with subpar meals.
One exception are the so-called 'Traditional Observance' lodges springing up around the US which are more continental european in nature:
http://www.masonicrestoration.com/traditionallodges/tomasonry.html
Regarding Kabbalah etc.. well, there's a lot of mystery in Freemasonry and even those who have been members a long time haven't really pieced together the puzzle - if in fact there is a cogent puzzle to solve. There is some evidence that very early lodges were at least in contact with authentic judaic mysticism. If you want a thorough read about how these things connect, here's a cheap read:
http://www.amazon.com/Restoring-Tem...=sr_1_1?ie=UTF8&s=books&qid=1272064495&sr=8-1
Underlying everything, though, there's a basic moral code - golden rule type stuff - which isn't a bad thing. The charities are good though they aren't the end-all of Masonic work.
The Scottish Rite of Freemasonry, for example, has this Creed:
"The cause of human progress is our cause.
The enfranchisement of human thought our supreme wish.
The freedom of human conscience our mission.
The guarantee of equal rights to all peoples everywhere the end of our contention."
Kick ass, right? I'm not sure how relevant or effectual they are with their aims these days - but the rituals are significant and beautiful.
Anyone who is a Mason or has questions and would like to correspond with me is welcome to PM me.