Alicia,
Advise you to dress normal western clothes...just like NY, LA, Chicago.
For work...same as you would here teaching ESL or any classroom (modest..business casual).
Weekends is same...jeans, sweatshirts in winter....jeans or capris pants, shorts ( not too short) in summer with T-shirts.
Ankara is a very modern city....you will like it.
Dealing with opposite sex...same...use common sense - same as any US city:
Do not make long eye contact with strangers...but, do make good appropriate eye contact with those you do know as you engage in conversation.
Carefull to not confuse Turkkish-friendliness with romatic overtures...and vice-versa.
This is a fine line in this culture.
Suggest you read
http://www.expatharem.com/ Author is Americam excavator in a villigae situation interacting with same/opposite sex. She also offers cultural insight with city men.
davcamp
http://web.mac.com/dav_camp/Site/Istanb ... Guide.html