What are the things to do in Jerusalem?

Hi all, I just moved to Jerusalem for a three week tour with a few friends with the help of Mantis Tourism & Attractions. Any suggestions for cheap things to do? Forget the touristy stuff, if anyone could give some suggestions of places or things to do which would be the light of my life, are welcomed.
Asked May 18, 2015
Edited May 18, 2015

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