Apple released macOS 10.12 Sierra on September 20. If you’d like to upgrade but are feeling nervous or hesitant, I’d like to recommend my latest book: Take Control of Upgrading to Sierra. This is my tenth Take Control of Upgrading to… book, going all the way back to Take Control of Upgrading to Panther back in 2003. Because this book is informed by years of experience and countless test installations, you can upgrade with confidence.
As I say in the book’s introduction, upgrading doesn’t have to be a big deal. If you’ve upgraded your Mac numerous times and have excellent backups (and fast broadband), you’ll almost certainly be fine without having to read my book. But if you’ve never upgraded a Mac’s operating system before—or if it’s been years (Snow Leopard holdouts, I’m looking at you)—you may want a bit of expert advice about how to prepare your Mac, avoid (or fix) problems, and get up and running afterward with minimal fuss.
As usual, I spoke to Chuck Joiner about this book on MacVoices. Have a look (or listen):