I myself tried to root a Nook HD+...and after five hours I was still confused as heck. The explanations on xda-developers are extremely opaque and disorganized.
You have to be talking about ROM'ing, because no matter how you slice it, it's not *that* difficult to root.
Granted, xda does get to be a jumbled mess sometimes and the latest info can be hard to find. I hate it when the instructions say something like: "Step 3: flash ZZY to XYZ and then xipflash your kitbootle to dmozip..." and there's about 5 things that mere mortals don't have a clue about.
Still, there's several good threads on how to root/ROM the HD/HD+ and it really shouldn't take anyone five hours. The first time I tried it, it took me maybe one hour of reading how, finding what's what, figuring out what "flashing ZZY to XYZ" means, downloading and organizing the right tools, but then maybe five minutes to do the actual root.
I'm in agreement with others though, there's really not a whole lot of point to rooting the stock image. To me, most of the point of root is being able to modify things at the system level, and as said, on the stock B&N image that can actually cause a system wipe. So really, why bother? (I guess to do a stock ROM backup and install a recovery)
If there's some system level tweaking one really wants to do, or just a better overall experience, I'd just go ahead and install CM10.1 on it.
I can't quite imagine how it'd be any simpler to install CM10 (boot an SD card installer, install recovery, install CM10.1 and gapps) but apparently people can get tripped up doing it, so I guess YMMV.
If stock is good enough, I say just stick with it and install an alternate launcher. If you want more, look into doing a CM10.1 or CM10.2 flash. (For me, CM10.1 has been perfect and I haven't wanted to bother messing with CM10.2, but from what I read, that's come a long way and now is part of official CM10 nightlies for the Nook HD/+).