I'm self-studying differential geometry with Do Carmo's books "Differential Geometry of Curves and Surfaces" and "Riemannian Geometry" and I find those books very good, however I feel a little confused when selecting which exercises to do.
What's the best way to select exercises when studying that kind of math? I know this question seems silly, it's like : "how can someone don't know which exercises to do?", but it's just the case that there's no time to work on all of them, so I feel a little confused in which to work more.
Thanks in advance, and sorry again if the question is not fitted to this website.