I purchased my ticket and went to see The Beat Museum. There is a very good movie oo the Beatnick Movement. Some of the names of the Beatnick movement are Jack Keruac, Allen Ginsberg, poet Lawrence Ferlinghetti, Timothy Leary, Ken Keasey and so forth. The movie is worth seeing.
Then on the 2nd floor are exhibits such as Allen Ginsberg's Organ, Banned Books Exhibit (City Lights Bookstore), and more.
I found it well worth my time and with the ticket price being so reasonable, I find it a very fun thing to do. Staff is very helpful.
There is also a store with books, etc, to buy if interesed.