tutorials are usually held one week after lectures testing content from lectures. They are held on different days, depending on the subject. As I said, go to that link to see when yours are held. As I also said you can usually change the times of yours in person.
you'll be doing political economy, I take it. I'll use it as an example:
1) Frank Stilwell (the lecturer) is amazing!!!
2) Lectures will be on Tues and Thurs, from memory. They are held at 12 and 3 on each of those days (for example). You can go to either one of those, as the content is repeated.
3) Tutorials cover content from the previous week. (e.g. a Thursday Week 3 tutorial will cover the week 2 lectures)