I'm thousands of miles away from Jerusalem.............and NJ, but wanted to chime in with few sugestions on how to find people to jam with.
Every
music store here has a notice board where people put little ads looking for a jam buddy or for like minded people to form a band.
Give a few of them a call or if there's nothing you like, you live a note with your number on it and just meet a few people that way.
Alternatively get the local
guitar mag and look through the ads - a lot of people are looking for other people to play with there as well.
Another option is to get a part-time job in a music store and just talk to the people that come in to try/buy guitars.
Do these things and you'll have tons of guitar buddies in no time.
ilia