P is for Potential Problems
Don't install Android P beta if you can't deal with problems. It's as simple as that. While we don't think it'll be full of problems, there's a lot of potential for things to go wrong.
If you aren't in a position to deal with bugs and problems, or at least search on forums and look for fixes, don't download it.
Only try it to see what's new or for testing purposes if you are a developer. We recommend doing so on a spare device or skipping the Android P beta completely if you aren't ready to deal with the results.
We'd advise users to read the Android P release notes. It goes over all the current problems and issues that could arise. Giving you an idea of if it's worth trying yet or not. I'm not experiencing too many problems on the 4th release, but you might not have the same luck as me.