Wyvern, you’re touching on one of the great potentials of LD’ing! To be able to use advanced LD’ing, to tap the vast store of knowledge that is your unconscious mind would be a great achievement -- not to mention that it’ll open doors to knowledge and experience that you never thought existed!

All hyperbole aside, though, I’ve given this some thought as well, so let me offer a couple of suggestions off the top of my head:

* First, everything stored in your mind is indeed a memory -- no need for two buckets.

* Don’t dismiss using books as your interface; reading books in the dreaming is much easier than setting up the interface you describe, so you could probably assume that reading won’t be a problem if you’ve succeeded in making your library. So if you like the look and feel of books, and they carry meaning for you personally, then go ahead and use them. Also, books don’t always need to be read -- you might only have to open a dream book up to experience the memory listed on its cover.

* You might want to consider stretching the metaphor a bit. Think of this less in terms of a library filled with volumes that you need to find than a special place where everything you ever experienced resides, and all those memories are interested in making themselves known. How you find those memories can then happen in any way you want -- the place can be anything you are comfortable with. I personally like Da Vinci’s Memory Cathedral, and also the VR interface that had a bit part in the movie Disclosure makes a for a good image. My point here is that the retrieval path depends less on the image of the filing system than on your will to retrieve the memories.

* There may be one major flaw to your plan: Memory Cathedrals, memory libraries, or what have you, can only work on an ongoing basis. In other words you need to symbolically tag each memory (using whatever method you choose) upon their initial creation, so that later you’ll have a way to retrieve them. I’m not sure any interface system you devise under this plan will help you to retrieve “untagged” memories. Don’t be disappointed, though; you may only need to revise your plan slightly to get those older memories. Perhaps instead of a file retrieval system, you might consider an exploration system, where you devise a dream or adventure whose plot lines encourage your unconscious to retrieve a particular memory. For instance, say you want to remember a particular math equation you learned -- and immediately forgot -- in math class several years ago. You could simply create a dream where you are back in that class, all details correct, and the equation is on the blackboard. And then, of course, it would be time to tag the memory.

That’s all I got right now, even though I think I left out about 90% of what really needed to be said here. Ask me some specific questions if you’re interested in tapping my addled memories some more…

Good luck with this idea; I hope you are able to turn it someday into a useful tool.