Whether one to one or one to ten, you will find that you will need to read around your subject and do any preparatory work requested for each session. Even so it can be difficult to understand exactly what you should be getting out of a tutorial. Tutorials are about the student having open access to the great minds of teaching staff to thrash out the ideas and arguments explored in your own reading and essays. Take an hour to read about the topic before going in, and ask as many questions as you can. Often tutors will ask you to read aloud your essays and will then give you extensive feedback and other ideas, which you should use as you progress in the course and return to the topic from other angles.
Seminars are less frightening.
Ten or fifteen students enter into debate on a new aspect of the topic. It is useful to follow up what you learn with additional reading and research, and to keep comprehensive notes. Seminar topics usually lead onto at least one essay per semester, and you will need to be able to expand upon each aspect of the topic. You may be asked to make a presentation to the group on one aspect of the topic, and you will need to do extensive research and then break down the information and debates into bite sized facts with you can bring into your presentation. New students have to learn how to devote time independent reading and note-taking, the traditional forms of studying, organising a presentation and how to develop an organised approach to storing information, and using it again in essays.