I don't think my HD+ had one on the device itself. I know I don't have one now. It took them awhile to get one posted to the website but you can find one for the HD on the HD support page:
If you haven't deleted it, then just search for guide and it will show up.
What they do is they put it at the very end of your books list (for some strange reason) so it's hard to find.
The link compulsive reader shared will have the latest version.
Quick Start booklet states "A PDF version of the Nook HD User Guide...can dlownload to your computer." Where is this Guide located?