The lecturer will usually expect you to have read some material before you come to the lecture and my advice is always do the reading, always without fail, every single time do the reading. By this, by reading you don't need to fully understand the material, that's the point of the lecture is that after the lecture, hopefully you will understand it but you should have read it through at least once before you go into the lecture, even if you skim through it quite quickly. What it does is to put in your mind some of the structures, some of the understanding and the lecturer will add to that. So really in terms of preparation for the lecture apart from turning up on time and normally be awake, I would expect that you would have done the reading. I cannot emphasize enough that you should do the reading, I think I've said about three times and I'll say it again – do the reading before the lecture. This is one of the main ways you will get value out of being at university, this is the way in which you are going to learn at university. Not every lecture will have reading that you will need to do but when it does have reading beforehand make sure you've done it. There's a couple of other things, lecturers almost always give you slides to be downloaded and you should download those and have them with you to make notes on, take a pen so that you can write on them and just make notes to add to it. And if you've done the reading, you've got the notes and a pen and that you're awake then you should be able to gain the most out of the lecture.