New to LCS-which topic?

Hi there, I am enrolled in the coach certification that starts in November. This is my first time in self coaching scholars as well. I just signed up last week, so can you tell me which topic in the study vault is the shortest in length?

Also, for next month, I am trying to decide between managing my mind and mastering emotional well being. Could you tell me if one of those would be better for me to do as a beginner and/or as a coaching certification enrollee?

Thank you!