Create a folder on your computer called "Book Notes."
Open a text document and type your notes of either an electronic or paper book into the file. Save the file using the author's last name and the year the book was written: Name-2010. Save the file in the "Book Notes" folder. Repeat for each book for which you have notes.
If you have multiple books by the same author and written in the same year, name each file Author-Year, with a letter: Author-Year-A, Author-Year-B. When you want to look up a note you can open a search window for the folder and search for author, publication year or keyword.
Write your notes by hand and place the notes in a file folder. Write the last name of the author and the year the book was published on the file folder in the following format: Author name-Year.
Organize folders in the file cabinet in alphabetical order by author's last name.
If you have multiple books by the same author and written in the same year, name each folder Author-Year, with a letter: Author-Year-A, Author-Year-B. When you want to look up notes on the author, consult the corresponding file folder.