Honestly, I haven't watched a whole lot of Khan academy's videos (I prefer FreelanceTeacher
), but from what I've seen, they're pretty good. He tends to use very basic examples, so they make O-chem seem pretty straightforward. The key is to be able to apply the mechanisms to more complicated molecules and reactions. The main thing that makes O-chem so difficult is the sheer number of mechanisms and reagents to memorize. Of course, memorization is only part of it, because you absolutely must be able to understand how molecules "behave and interact" with each other to truly do well in O-chem. It's all a matter of opinion. If you like a good challenge and love to learn and work hard, you'll like O-chem. I am in my second semester of O-chem, and I'm really starting to enjoy it!