I moved from Vim to Spacemacs (emacs with evil kit) four years ago. I was worried initially worried my productivity might go down due to not knowing emacs functions. Surprisingly, there was an included plugin (https://github.com/kai2nenobu/guide-key/blob/master/README.o...) that offered me all the possible keys at the bottom. Most functiond are two, three or four keys away. For instance, I wanted to copy the file name I am editing I could press Spacebar, which offered about 15 further keys, such as f all functions to do with files, b for buffer functions, w for window functions, etc. Once i pressed f, then I see all the functions possible on a file, including Spc-f-y for yanking the file name. This made the editor auto discoverable for me, almost like jumping to Windows 3 after years on MS-DOS.