NAS (network-attached storage) can be a great way to expand your available data storage, but buying a NAS device involves wading into a lot of technicalities. In this article, adapted from his book Take Control of Your Digital Storage, Jeff Carlson breaks down the NAS buying process.

macOS High Sierra switched to APFS (Apple File System) for Macs with solid-state storage, but what does it do? Jeff Carlson explains why Apple made the change, how APFS works, and what it can do for you.