The language used in the lectures is normally Finnish, but it is practically always easy to get assigments and examinations in English. Some courses are also lectured in English - see Study Programme for more information. Also the CSE homepage can be useful here. Most of the courses that have more than one exercise time require students to choose only one of them. It is also common that a course reserves an exercise time eventhough it rarely has any exercise classes.
Some courses are periodic courses , thus last only half of the semester.