Tip of the day: buffer navigation with global mark

[Kai Großjohann]

It is well known that you can do C-SPC at various spots in a buffer,
and subsequently, C-u C-SPC takes you back.  (Repeat to go further
back.)  Kinda like the web browser history.

But it is less well known, I think, that the global mark ring exists
and can be navigated in a similar manner.  If the previous mark was
set in another buffer, C-SPC also pushes mark on the global mark
ring.  This can be used with C-x C-@ to jump back to it.

So you can do C-SPC, then go to another buffer and do stuff.  Then
later on, C-x C-@ will go back to the original buffer.

It might land you in the wrong spot, though.  But C-u C-SPC will cure
that.
-- 
A preposition is not a good thing to end a sentence with.