The first thing to do is read through the tutorial very carefully - and preferably more than once. This is not a trivial GUI procedure like the Fedora upgrade was, or like many of the previous Mint upgrades have been. It requires use of CLI commands, and those commands produce positively scary amounts of text output. It takes a relatively long time to perform the complete upgrade by Linux standards (it's done in a flash by Windows upgrade standards), and it is not entirely automated, so it will require manual intervention numerous times along the way.
In our Getting Started With Raspberry Pi series, we’ve introduced you to the basics of Pi, told you how to get everything you need, and help you boot a basic operating system. But, Raspberry Pi is much more than that. You can use it as a TOR proxy router, build your own PiPhone, and even install Windows 10 IoT.
This little device comes with lots of flexibility, that allows it to be used in multiple applications. Well, did you ever think about wearing your Raspberry Pi? If your answer is NO, I won’t be surprised.
If you imagine a scenario where Raspberry Pi is used to build a smartwatch, it would look too bulky. Well, that’s the thing about making geeky things that set you apart from the regular crowd, right?