Naile’s Art Home is a marbling paper (Ebru) gallery and workshop located in Cappadocia.
Kayaköy Art School , located in Kayaköy, a ghost town near Fethiye is offering art classes in summer, specializing on photography, painting, and sculpture.
You can take the Ottoman Turkish classes in Adatepe, a village frequented by intellectuals near Küçükkuyu/Altınoluk in the northern Aegean Region. You can also participate in philosophy classes taking place every summer in nearby Assos, organized as a continuation of the ancient “agora”/”forum” tradition of Mediterranean cities.
Glass workshops located around Beykoz on the northern Asian banks of the Bosphorus in Istanbul, are offering one-day classes that you can learn making (recycled) glass and ornaments made of glass.
There are many language schools where you can study Turkish in most of the big cities. Ankara University affiliated Tömer  is one of the most popular language schools in Turkey and has branches in many big cities, including Istanbul, Ankara, and Izmir among others.
Many Turkish universities (both public and private) are participating in pan-European student exchange programs (Socrates, Erasmus, and the like). Some also have agreements with non-European universities, too. Check with your own university and the one that you intend to study in Turkey.