The aim of this study is to present the development and issues of internet and internet use. The study has a descriptive survey design and 185 randomly selected teacher trainees at Marmara University, Ataturk Education Faculty in the 2001-2002 academic year constitute the sample. Data were collected via a questionnaire prepared by the researcher and analysed using percentages. Results were grouped under the following findings. According to the teacher trainees the most beneficial features of the internet were easy access to information, easy communication, feeling free and being able to access any part of the world, making the best of their free time and educational opportunities. The most harmful features of the internet were, respectively, loss of time, pornographic content, encouraging bad habits, high telephone bills and being addictive. If they had the chance to create a website on the internet, teacher trainees stated that they would first like to design a website for education, second for personal relations, third for information and entertainment, fourth about their hobbies and fifth about health. When their purposes for using the internet is listed, the first was sending emails, second surfing the web, third looking for information, fourth reading the news and fifth looking for schools and training. 29,5% of the teacher trainees believed that information on the websites is not reliable. 25,3% thought that the roles of school and teachers have diminished in the current century. 26,1% supported the idea that internet technologies offer more original and varied learning opportunities than teachers, 23,9% that they offer individual learning opportunities, 23,9% that they provide access to up-to-date information, 15,2% that they offer multi-dimensional interaction opportunities and 10,9% that they facilitate free thinking. (Contains 6 tables.)