Migrating from editors

Emacs

To bring some of the Emacs keybindings into your IDE, go to Settings / Preferences | Keymap and enable the Emacs keymap.

If you are used to M-x, consider remapping the Find Action binding to this shortcut in the Keymap settings.

For more Emacs extensions, try the Emacs+Patched plugin.

Vim

To get Vim emulation in the IDE, use the IdeaVim plugin. It adds motion keys, marks, registers, and visual mode commands.