Depends on the subject. But I try to find a course on EDX. There are so many amazing resources these days. If it’s maths I’ll try to copy the book by hand and

Depends on the subject. But I try to find a course on EDX. There are so many amazing resources these days. If it’s maths I’ll try to copy the book by hand and do the recommended exercises. If it’s CS ill start with the labs/exercises. I use that as a guide to see what I am struggling with. If it’s humanities, business etc - I’ll follow the CS path.