Oh, I so admire you. I really, really didn't like Chemistry. Of all the elements we had to learn I've probably used 10 in my career. And I didn't carry litmus paper in my pocket to see if a liquid was either acidic or alkaline. My teacher was very nice but didn't make it at all interesting and don't think any of us were enthused enough to go any further with it. So, as I said, I really admire you for having pursued it. I graduated from a hospital school of nursing...3 years summer, winter, spring and fall. Think we got a week off at Christmas each year. We did mostly 10 day rotations...either 7-3, 3-11 or 11-7...the hardest part was working nights and going to class from 8-4, study then to work at 11P, off at 7:30 A and back to class at 8A and then repeat the process x 10 days.