1. Read the notes.
  2. Check out the slides.
  3. Check out the very first commits in git.
  4. Checkout the Initial revision of "git", "the information manager from hell 
            git clone https://github.com/git/git
        cd git
        git checkout e83c51633
  5. Read the code source as a .pdf book.
  6. Explain to others.
  7. Be happy !