Most of the concepts? I do understand that the teaching dynamics in university are much different than in high school, as the professor won't be holding my hand and guiding me as a high school teacher would. But, seeing as professors aren't required to have any educational qualifications and most are there to research and teach on the side as a requirement. With that said, are most students generally required to learn most of the concepts by themselves and only go to the lecture to solidify that knowledge and ask questions from the text? Or is the lecture very vital to the learning process and the professors do teach the concepts from the book? I've been trying to self-learn the delta-epsilon proofs out of a textbook and it has been quite frustrating, actually. I was wondering if it was like this in university. Thanks in advance.