Best online videos for Engineering Materials

Hi, so I just began my Bachelor's in Mechanical Engineering degree and so far other classes are going just fine, I do however have some catching up in fluid dynamics, anyways beside that there is only 1 class which I suck so far at, and that is Engineering materials, I what so ever cannot understand it, so I would appreciate it if someone could tell me some good videos or lecturers online who could explain Engineering Materials better.