Hi,

We have so many exchanges. For me, the best one is Paribu.com which has the much more trade volume among other exchanges. Btcturk.com and Koinim.com are the other ones which have higher volume than the rest.

There are not many Turkish cryptocurrencies, only 2 AFAIK. One of them is Akche, Turkish anoouncement page is here https://bitcointalk.org/index.php?topic=2332494.0