Print friendly format. In PubMed you can now send selected references to the printer. This opens a new window, with a Print button, and the references are printed without all the side bars and boxes that are on the standard PubMed screen. Click the Send to... box to see the Printer option.
There's something on the Clipboard. Once you have sent some references to the Clipboard (the Send to... box again), an asterisk appears on the Clipboard tab, so you know that there is something there.
Training materials. I may have mentioned this before, but I will mention it again. There is a lot of training material for PubMed, including a new version of the online tutorial, at http://www.nlm.nih.gov/bsd/disted/pubmed.html.