Cramer Answers Twitter Questions on GlaxoSmithKline, Royal Dutch

Jim Cramer answers viewers' Twitter questions from the floor of the New York Stock Exchange. He advises a viewer who read his latest book, 'Get Rich Carefully,' on finding the parameters around what 'restricted' means and the approximate rule of thumb for taking percentage gains. Cramer also explains why he's not interested in GlaxoSmithKline as a long-term buy or any hotel stocks except Marriott. However, he details why VeriFone Systems is a must-buy, and reveals what stock he advises investors to watch right now. With oil prices down, Cramer also weighs in on Royal Dutch Shell and 3D printer Stratasys as Hewlett-Packard moves into 3D printing. Lastly, Cramer answers fantasy football fans looking for insight on the status of Minnesota Vikings running back Adrian Peterson.