Check Out Android Pie
Make sure you're familiar with Android Pie and the One UI before you install them on your phone. This way, you aren't caught off guard by the changes.
Android Pie looks a lot different than Android Oreo thanks to Samsung's One UI. You'll notice the difference as soon as your phone boots up for the first time after the installation.
We recommend getting familiar with all the changes at the Google level. To do that, take a look at our Android Pie vs. Android Oreo walkthrough. It highlights the key differences between the two operating systems.
You'll also want to get familiar with the the biggest changes Samsung's made to Android Pie. To do that, take a look at our guide to Samsung's Android Pie update.