Sal,

I fear that you are becoming too much like my lecture professors in Calculus/Mathematics in general because too often do I find the subject I'm struggling in, refer to your video on said subject and make it to the end of the video not knowing where you got certain answers from. This saddens me because I initially enjoyed your approach to teaching things and now I often seem either more confused after your video or just not much better off than I was before. I also find it frustrating that a lot of your examples are far too easy examples and don't show how to approach some of the harder problems such as rational expressions or simplifying radical products. I hope this is reviewed and is taken as no more than constructive criticism from a very devout follower, fan and student of yours.

Matthew K. Davis