Amazing museum well worth a visit.
Tip: The person at the front desk may tell you that you should start at the 7th floor and work your way back down. What they didn't tell me was that the room behind the desk had a timeline detailing Warhol's life. Although I was glad I saw this on the way out and made for a good wrap-up of what I had seen, I wish I had read all this when I started at the museum to give a better context to the art.
Two places where the museum can improve (pretty minor):
1) The cards next to the art usually detail the bare minimal facts about the art and sometimes a short bio of the artist (there are many non-Warhol pieces here). I wish more of the cards explained the context, meaning, and symbolism of the pieces. A lot of times, I was particularly interested in a piece and was disappointed that I could not learn more about it.
2) The giftshop has about two dozen poster-size prints of Warhol art but only has postcards of about 3 museum pieces. I found this incredibly disappointing because I love purchasing postcards of art I find interested when I'm visiting a museum.