I first used Endnote ten years ago and found it more hindrance than help. I was using the Harvard reference standard and found I could do it in my head easier. I have now been converted to Menderley which I like a lot. The best thing is that you can marry an Endnote reference list with a Menderley one!
The class sounded good and managing references is better when you can trust some software. I still like Menderley!