Teaching Turkish as a foreign language (TTFL) has recently gained much importance in modern life. For some reason, a large number of people and students with dissimilar background come from other countries so as to start off a new life primarily in Istanbul and/or many other cities in Turkey. Many of whom need to ensure their arrival and long term accommodations by visiting a language center. Some language institutes and foreign language centers, therefore have been trying to meet these needs and give a certificate in accordance with European language portfolio (ELP) levels. Through this paper it was attempted to clarify some certain questions showing up in this teaching performance of this outstanding language "Turkish": "What type of challenges foreign students face in Turkish courses and how language teachers/instructors help them to get through these problems, what activities teachers carry out in the classroom and what materials and games they use in courses." This paper reports the findings of a study aiming to reveal what mistakes the students make while learning their first, second or even more foreign languages and this study evaluates them through the more frequently used language teaching methods. Abbreviations: TTFL: Teaching Turkish as a Foreign Language L: Language FL: Foreign Language