Please add Practice Problems to the Organic Chemistry Video Course

Hi! Thank you so much for creating a free orgo course! 

Orgo is a really hard subject. Myself, and probably many others, feel that your orgo course needs to be updated. Below are my main requests:

-Please add practice problems and quizzes. 

-Please delete the videos Sal created that were later replaced by Jay's better videos. The fact that they repeat is very confusing, and all of Sal's videos beyond the stereochemistry unit need to be deleted.

-Redo all the videos on free radicals. They are extremely unstreamlined and confusing.

-Sort the units clearly into semesters org 1 and org 2.

Again, thank you so much!