Don't Install Android P If You're Not Prepared
A lot of people probably want to install the Android P update immediately. However, most of you will benefit from waiting a little bit longer. And while the beta program makes this extremely easy, and fool-proof, this 4th release is your best bet.
If you aren't prepared for Android P don't install the Preview. It's as simple as that. The process won't erase your device if you join the beta, but problems can and will emerge. Just know that before you start. Plus, if you want to revert to Oreo you will have to delete everything.
We've put together a game plan that will take you through the steps we take before we install Android software on our phones and tablets. You don't need to follow every single step but at the very least you'll want to make sure all of your important files are properly backed up before you make the move to any new software version. It's an older guide, but the same rules apply for Android P.