hey guys I am taking a class right now called Finite Mathematical Structures, and I am having a pretty tough time. although it's only about 1 - 2 weeks into the semester, i am having a hard time actually understanding graph theory problems. so far we are doing isomorphisms, edge coverings, corner coverings, the even-odd edge theorem, etc. i am using Applied Combinatorics by Tucker (coincidentally, he is also my Professor for the course) and I think the text is kinda weak for theory, but for applications and problems its great. can anyone offer me any links or general seeds of advice for a discrete math course like this? i am so used to calculus and things of that nature, i am not used to such an abstract level of mathematics.