Escape to normal mode
Many people are still using esc key to escape to normal mode in vim. Some even remap capslock to esc, or remap jj or jk to escape to vim mode to make it easier to escape to normal mode.
In fact, you can just use ctrl+c or ctrl+[ to escape to normal mode. These are accessible, and are the same across different machines, so you won’t build the muscle memories that don’t work without your configuration.
Exit vim
Most of the tutorials teach you to exit vim using :wq command, That’s too many key strokes. The real way to save and exit is ZZ, and exit without saving is ZQ.