Need to make notes in a PDF, or perhaps correct a few typos or reorganize the pages? Here are the tools and tips you need.

You can type on a PDF using one of several different options, depending on the device you are using.

Like the GIF (that's Graphics Interchange Format), the PDF (Portable Document Format) has survived and flourished through the digital age. That's partly because of its versatility: It's the go-to ...