Hi Vanessa - and welcome to the Totara Community! Hopefully George has given you the information you needed here, but in case you'd like to know a bit more, we also have a couple of courses here in the Totara Community that you might find useful:
Course reports - all about reports within an individual course
Reports - all about higher level reporting across your site
We also have detailed Help documentation available on our Help site.
We're here to help - so let us know if you have any further questions!