The aim of this thesis was to use qualitative approaches to show how four preschool teachers experienced their start in the profession as a preschool teacher. The questions in the stydy were as follows: What kind of expectations did the preshool teachers have before the start in the profession? What did the preshool teachers experience as difficulty and opportunity at the start in the profession? How do they think now about their professional development during the early period in the profession? The empirical material, I got through a qualitative interview method. My theoretical starting point was to take the hermeneutic research perspective, aimed for interpreting and understanding. Theories of Socialization and socialization for teachers, socio-cultural theories and theories of tacit knowledge have been used to analyze the material. The material has also been compared and analyzed against previous research on teachers first years in the profession and the research on preschool reachers start in the profession. The results show that three of the interviewed preschool teachers felt they have the support of colleagues during the start of their profession. Preschool teachers experienced various phenomena as difficulties during their professional start, but they stated that they experienced the same phenomenon as an opportunity in the start of the profession. These phenomena were the interactions with the children and the support they felt by their colleagues. Furthermore, the preschool teachers felt at home in the profession after approximately one year.