Josh has an update on his problem from last week. He had a 17" MacBook Pro and he was able to update to macOS Sierra and all his missing icons, email and other missing data came back.
Kurt has a 2013 MacBook Pro. He is worried about how much memory he has, since he only has 8GB. Leo says that macOS has a really good memory manager that can enable it to run with less RAM than other computers. It's really good at releasing RAM when other programs need it. He'll also want to be sure that the extensions in his browser aren't being memory hogs. The best browser on the Mac for memory management is Safari, by far.
Kurt also wants to know if he can upgrade it to macOS Sierra. If Apple recommends it, Leo says he should do it.
When Apple released macOS 10.12 Sierra, it changed the way it handles your data. Instead of keeping the "Documents" and "Desktop" folders on the Mac locally, it added those locations into iCloud. Since Apple only gives you 5GB of cloud storage for free, you would need to buy more storage to storage more files unless you turn that feature off.
Lance upgraded to macOS Sierra and now his Time Machine isn't working. Apple Care hasn't been able to solve the problem either. He's even reinstalled the OS and Time Machine. It just hangs about 2/3 of the way through the backup. Leo says that nobody really likes Time Machine, especially when it doesn't work. No one really knows how it works, either. If Apple can't figure it out, it's a lost cause.