Wellcome! As you have already a background in hyperfine interactions, this course can still be relevant for you because (1) the material is presented not always in the traditional way. Looking at it in a different way helps to understand it even better. (2) Helping out your fellow students by answering their questions in the forums, is a very good way of learning too.
I hope and expect you will still find a sufficient amount of knowledge that is new for you.
If from your background you have suggestions to improve the course, feel free to use the ‘suggest an improvement’ link at the side as often as you want.