IntelliJ Wizadry 

Great free IntelliJ tutorial by Dr. Heinz Kabutz: javaspecialists.teachable.com/courses/enrolled/256104
Best of:

  • Shift+Enter: new line when in middle of a line – Cmd+W: Context aware selection – Shift+Cmd+Up/Down: Move code block – Alt+Cmd+T: Surround with

Or go to help in IntelliJ and select „Keymap Reference“