It is important to note that even with the finest resources available, Organic cannot be mastered by studying notes. Instead, you learn Organic by working problems. Notes help you solve problems, and the techniques that you develop while solving the problems will be applied during exams.
There are no shortcuts in Organic. Even having the textbook open during an exam would be useless to a student who has not invested hours working practice problems.
I worked all the problems at the end of every chapter in my textbook and used the student solutions manual to verify the answers.