xenforo upgrade

Hello everyone, I'm currently upgrading to a newer version of XenForo and have encountered a persistent issue that I hope someone here can help me resolve. During the upgrade process, I received the following error message: XF\Db\Exception: MySQL statement prepare error [1054]: Unknown column...

How to update xenforo?

This already sounds like a stupid question, but let me just run with it... The Customer part of xenForo does not really tell you what version of xenForo is the most current compared to what you have - so when do you know, or where do you find, that information to make an informed choice and/or...