“Google Cloud Print is an excellent tool for people who still own older printers that don’t have a network connection of their own. It allows you to hook up your printer to your computer via USB and then use that computer as your printing server — no need to throw out a perfectly fine device.”
How to print Mail messages to PDF with 3D Touch on iPhone
“Mail may not have a Print PDF to iBooks button, but 3D Touch on iPhone 6s lets you do it anyway! The ability to “print” iOS content to a PDF file was a long time coming. Even when Print PDF to iBooks was added to the Share Sheet, however, the built-in Mail app was left out.”