I needed to start from beginning. I did some research and found that post. It looked good so I gave it a try. First download ClockworkMod attached to the post, but later I downloaded latest CM snapshot from there and added Google Apps for CM11 from there. I put everything as described on SD Card and kicked off installation. It flew like an Albatross. (To be honest I don't know why I did write Albatross - maybe because of this?)
Anyway CM11 works good at Nook HD+.