Patience is a Virtue
This puzzle is available on a MS Word Document.
It's a Beale cipher, and the document you use has initials U.S.C.
You'll get some lines from a famous book (original spelling), but missing a few letters. Arrange by the natural order they go in, they'll spell out a couple of words plus a bunch of letters.
Those letters play something, which you'll have to use in the cipher on the blue boxes.