Apple makes it easy to move PDFs and eBooks from Messages into the Books app, so you can keep reading without missing a beat. Here's how to do it on iPad, iPhone, and Mac. If you're an avid bookworm ...

From Adobe Acrobat to free online editors and built-in tools, here’s how to merge multiple PDFs into one document.

Tap the Share icon (the square with the arrow). Scroll down and choose Print. On the preview screen, use two fingers to pinch outward. This instantly converts the preview into a PDF. Tap the Share ...