01-03-2015 10:17 - edited 01-03-2015 10:24
Hi. cipri13. Just press the power and volume up buttons at the same time to take a screenshot on a Windows Phone 8.1. The images will automatically saved in the Screenshots album of the Photos hub. BTW, welcome to our community.
@Slyslmn. You will not be able to print directly from the phone, but you may search an app that could do that on the Store.