I graduated from Mimar Sinan University in Istanbul. My parents and both their families are from Istanbul as well. I speak proper and very polite Istanbul dialect which is highly recommended.
I encourage my students to talk slowly and correctly, focusing on interesting subjects, actual news or their specialty areas. Sometimes we will read from articles and repeat after each other. Also we will have funny dialog and jokes but we will concentrate on learning grammar and pronunciation mainly.
For beginners, I can provide some basic grammar text exams and help them understand the grammar. I usually recommend learning materials such as music, movies and easy reading texts.
For advanced students, I prepare lessons in advance, so we can have some conversational time and some help with homework as well. Also, I recommend learning materials such as music, movies and books.