These notes summarize some of my discoveries (re-)learning GNU Emacs. Since these are my personal notes, it may help to briefly describe my background. I used Emacs on Unix from somewhere around 1990 until 1995. Then in 1995 I began using Windows as my primary operating system and stopped using Emacs. In 2010 I decided to give Emacs on Windows another try. I may not mention some basic things just because I remember them from my initial experience.