Hey everyone. I'm a second year maths student in University. We had intro to linear algebra in first year and I loved it. It was my favourite module and got 95% for my final grade. Later we had abstract algebra which I found more difficult but really enjoyed, just like analysis. This year we have another linear algebra and the whole class, myself included feel completely lost in the lectures. They are very difficult to follow. I was hoping someone good recommend books/websites/YouTube series or anything that could help bring me up to the standard I would need to be at. Any advice is much appreciated.

Tldr; was great at linear algebra and other pure maths subjects in first year of uni, now struggling at it in second year. Learning resource recommendations would be very helpful if anyone has any suggestions!