Man, I feel old. We did not have all the tech available today, when I went through college. I was a Mom and a wife, too, and did it a little at a time.
For me, I loved A&P and micro, but HATED chem. I got myself a free tutor, at the local community college for that course.
As for the notes, I would take them as we went, and if we had handouts from a powerpoint, or overheads, I would take notes on them. I also, as above poster mentioned, would re-write my notes, sometimes twice. It helped me retain the information.
One thing I will mention is that for me, and others in my program, those who had the best grades and did well in school, were those who were really there because they found healthcare and nursing so interesting. They knew what they wanted and went after it.
Good luck to you and I wish you the best!