File Manager
There are multiple keyboard shortcuts/hotkeys, that can be used to provide quicker access and smoother user expirience.

alphanumeric typing
  Quick search
up/down, home/end
  Cursor position
enter
  Descent into directory
backspace
  Previous folder
contextmenu/right-click
  Context menu
spacebar/Alt+right-click
  Select row
Ctrl+L/right-click on path
  Enter path manually
*
  Inverse select
+
  Select all
-
  Deselect all
F2
  Change permissions
F3
  Change ownership
F4
  Edit when possible
F5/Shift+F5
  Compress/decompress
F6
  Rename
Shift+F4/F7
  New file/folder
Shift+F7
  Search
F8/Del
  Delete
F9/F10
  Download/upload to
  current folder
Ctrl+C/X/V
  Copy/Cut/Paste
Esc
  Close active editor
  window
Ctrl+Esc
  Minimize active editor
  window
Ctrl+Enter/Ctrl+Shift+Enter
  Save/Save and close
  editor
Theme reload hotkey
  Reload current
  folder