I am pretty convinced at this point that the most difficult task when learning in a new topic in physics/mathematics is to actually sit down and do the back of the book problems till you figure out how to do the calculations at least once without mistakes. In my opinion, the experience of actually solving questions can be dreadful at times, so what would be ways to 'ease' /smoothen out the experience?
Tl;dr : Looking for tips on how to approach solving exercises faster