How do I get into L-space?

Hint 1 of 10:

Before you can get there, you need to learn about it.  An unlikely character
will tell you about it.

Hint 2 of 10:

Talk to the sleazy guy, and go through all of the options.  One of them will
bring up something about L-space.

Hint 3 of 10:

L-space is located in the library.

Hint 4 of 10:

So talk to the librarian about it.