how to study for uni??

this semester ı just have physics 101 and math 101 other lessons are not that serious/doesnt require studying to understand. Which channels would u recommend ı watch? ı think the subjects are 5/10 in difficulty but since it's in English its 8.5/10 . I want my GPA to be high as possible :( What exactly is a good gpa? above 3? above 3.5? Also how much should ı study in a day/in a week??

Kudos: 2