Just remember that you are in a muslim country, albeit a relatively liberal one. So unless spoken to first, don't talk to women you are not accompanying.

Oh, and unless you're of Middle-Eastern descent, you're gonna stand out .

Just dress modestly (jeans OR khakis, not shorts or cuttoffs) and you'll be fine.

Just be sure to ignore all the iINCREDIBLY insistent "guides" that will see you coming a mile away.