Question

Best ways to maintain notes for organic Chemistry

Answer 1

Writing down the mechanism in detail and concentrating more on the named reactions..

Answer 2

I think you should know the general formula for all homologous series. this will make it easier to segregate your compounds into various types. once this is done each  has a similar observations, products, when any member of homologous series reacts with another reactant.

concentrate on exceptions and various tests for identifying different series .

then go to IUPAC nomenclature