Hi Makol,
Turkey having the countless superstitions,has the common one as the Blue Bead.You wear this one to attract the looks towards it to prevent evil eye.People believe in that if you wear it on an appearant place , the evil look will be distracted towards it and you will be safe.
Another common superstition is knocking on the wood which is also known in other cultures.
Wearing your shoe on the right foot,
while you are entering the house you step with your right foot and while leaving stepping your left first,
swalloping the rice which was prayed on before an exam and writing with the pen as has been applied in the same way ,
some people still believe that cursing still exists and they go to the people who makes it as an illegal job to break it,
we prefer sitting while drinking water
wearig your underwears inside out ,
standing on the brink ,
killing a spider especially on Friday and at nights,
cutting your fingernails at nights are believed to bring bad luck.
if you are pregnant and you eat lots of quinces your child is supposed to have dimples,.
These are the ones I can remember and there are lots of them as Turkey is a rich country with different civilizations over the centuries.Hope these will be a profit for you.:))