Mop Up Operations
It’s reasonable to turn Time Machine back on at this point. But if you made a bootable clone before upgrading, you may want put it in a drawer and start your new backups on a new drive instead of overwriting it. That’s just to be sure you can return to your previous state with an archived bootable clone.
The Future is 64-bit
Apple has said that High Sierra is the last version of macOS that will support 32-bit apps. Our Macs a littered with these aging apps, and they won’t run in macOS 10.14, the next version after High Sierra, likely due out this time in 2018.
Going forward. you’ll probably want to catalog your 32-bit apps and monitor the developer’s website or the Mac App Store for the upgrades to 64-bit versions. Some apps may never be updated, so you’ll want to research modern, functional replacements.
To see which apps on your Mac are 32-bit, go to the Apple Menu, then About This Mac, then System Report… Under the Software section, select “Applications.” This may take a few minutes while the Mac searches for all apps. Then sort by the column “64-Bit (Intel)”. Those listed as “No” will have to be updated or replaced by this time next year.
Exploring High Sierra
There are lots of good, detailed, technical articles that provide an accounting of the most visible (and invisible) features of macOS High Sierra. Here’s a good one.
Phew! All done for another year!