Return to WoW for FREE This Weekend Only

Hey everyone, I’ve been away from WoW since 2020, but I played from 2007 until then, spending 17 years as a Horde healing priest. I’m curious about the Welcome Back Weekend. I’ve heard it might be a bit buggy, but I wanted to know what to expect and what I should do after being gone for so long. Any tips or advice would be greatly appreciated!