how to open *.info file in emacs in info mode?

Question

C-x C-f blah.info opens the file in fundametal mode. I used apropos and found Info-mode which I thought might change from fundamental mode

Answer 1

When your cursor is on the filename in the dired buffer, press I (shift and i). Requires dired-x, which is part of GNU Emacs.

I runs the command dired-info
  which is an interactive compiled Lisp function in `dired-x.el'.
It is bound to I.
(dired-info)

Run info on this file.