Gradually you will gain confidence. Plan what you want to say while the previous person is talking. Speak so that everyone can hear you. Always do some preparation before going to tutorials, so that you have something to talk about. Look as if you are interested.
Active participation is more important than taking notes.
The nature of tutorials varies from tutor to tutor and subject to subject. Generally, students are expected to participate actively in tutorials and often a percentage of your final grade depends on your tutorial participation. Tutorials give students an opportunity to practise analytical thinking practise problem solving ask questions gain a fuller understanding of the theory discuss how theory applies to reality try out ideas by talking them through with others learn from other students gain important group work skills for their professional life. Through active discussion you learn that others understand things differently from you. You gain fresh perspectives on issues and new strategies for handling problems.