You can sign PDF documents in Windows, completely electronically, using the PDF viewing program Adobe Reader. Here's how.
To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month.
Sifting through multiple PDFs in search of relevant information can be a real test of patience, especially when you’re under a time crunch and manually going through each document is not an option.