Keyboard shortcuts for switching between conetent title and tags

More beginner questions:

What are the keyboard shortcuts for switching between Content, Title and Tags area? Particularly back from Content to Title or Tags

I found in the Keybindings prefs the editor:title:focus command bound to <enter> but from the content area this doesn’t work for me…

You have to configure keymaps. Please read the documentation regarding keybindings first:

If you would like to bind a keymap to the editor with editor:title:focus, add something like so in your keymap.cson:

'.CodeMirror':
  '<KEY_STROKE>': 'editor:title:focus'