I'm really excited to play Classic and I'm worried about this. Everyone talks about how difficult Vanilla was, but there was also substantially less well-organized information about min/maxxing, boss fights, strategies, etc. The info existed, but it was messy, scattered, and a lot of folks didn't even know it existed. In 2019 WoW-focused YouTube channels and Twitch streams are a dime a dozen, there are quite a few sites focused on min/maxxing, and we've also got past experiences to make Classic substantially easier/smoother than Vanilla was.
But like I said, I'm worried about that. So I'm trying to avoid as much info about Classic as I can. I pre-registered my character based off of my first main character in WoW, rather than what's raid-viable. I aim to avoid guides and stay the hell away from easy-mode addons (Quest Helper, DBM, etc.). I want to recapture as much of my original experience as I can.