Almost all modules will include some lectures. Lectures are not meant to convey detailed information, which is much better provided in printed form but to set the scene, explain general concepts and excite you about the relevance and importance of the topic.
Many lecturers provide more or less detailed hand-outs (or references to key reviews) which will provide a permanent record of the subject matter; you should go equipped to take notes but do not attempt to write down everything that is being said. Instead, concentrate on listening and understanding the arguments; note down key concepts, exciting insights and also anything that you do not understand.
Always try to speak to the lecturer immediately afterwards if you have a query – before you forget what you wanted to know.