Mary's textbook was delivered to the wrong zip code, delaying her ability to complete assignments. She has been visiting the post office daily to check for its arrival. Mary has also signed up for LinkedIn, SlideShare, and Twitter as instructed by Anne. She was surprised to learn about the educational and professional development uses of Twitter from the articles Anne shared, as she previously thought it was only for casual chatting. Mary plans to explore ways to utilize Twitter in her library work.