Michael E. Cohen has updated Take Control of PDFpen to cover version 13 for Mac and version 6 for iOS and iPadOS. This was a different kind of update; Michael explains why there are few new features but a whole new look to the program, and why that is a good thing. He also helps us understand the inner workings of PDFs (without getting too geeky), and why that understanding is important when manipulating PDFs. Oh, and did we mention that this is a FREE book? Michael provides the details. Today's MacVoices is sponsored by Upstart. Fair and fast personal loans. Go to upstart.com/macvoices and find out how Upstart can lower your monthly payments. Show Notes: Guests: Michael E. Cohen  has worked as a teacher, a programmer, a Web designer, a multimedia producer, and a certified usability analyst. He's the author or co-author of several books, including Take Control of Pages, and Take Control of PDFpen, and can be reached on Twitter as @lymond. Links: Support:      Become a MacVoices Patron on Patreon     http://patreon.com/macvoices      Enjoy this episode? Make a one-time donation with PayPal Connect:      Web:     http://macvoices.com      Twitter:     http://www.twitter.com/chuckjoiner     http://www.twitter.com/macvoices      Facebook:     http://www.facebook.com/chuck.joiner      MacVoices Page on Facebook:     http://www.facebook.com/macvoices/      MacVoices Group on Facebook:     http://www.facebook.com/groups/macvoice      LinkedIn:     https://www.linkedin.com/in/chuckjoiner/      Instagram:     https://www.instagram.com/chuckjoiner/ Subscribe:      Audio in iTunes     Video in iTunes      Subscribe manually via iTunes or any podcatcher:      Audio: http://www.macvoices.com/rss/macvoicesrss      Video: http://www.macvoices.com/rss/macvoicesvideorss