The most important thing you should note is that there are no official beta keys. Blizzard opens the gates to their betas by granting access to your account — not sending you a beta key. If you’re in the beta, you’ll be able to download and play the WoW Classic client from your Battle.net launcher. If not, you aren’t in the beta. It’s easy to be tricked into thinking you’ll get a beta key from an email that looks like it’s from an official Blizzard address, but don’t believe their lies — they’re all fake.
Things like Tauren melee reach being bigger, which is something I experienced going away live during Black Temple Illidan progression (at least for that particular encounter), is confusing to players as it's a significant advantage over other races in some instances. No quest tracking is another apparently confusing issue, as many Mankirk's WIfe seekers well know, and there's a whole lot more where that came from:
- Gold traders, both buyers and sellers are disliked everywhere, literary on every realm. But have no worries, we have developed very safe practices for trading the gold between ours and your accounts. If you require a specific way of delivery to you (AH, Face2Face, Mail, CoD) we can oblige to your request - just send us an e-mail right after your purchase (include your character name) and we will take care of the rest.
World of Warcraft: Classic might be just around the corner, so it’s about time to start preparing. We’ve already published a class selection guide, and today we’re focusing on the most important resource of the game, of course, it is gold. Many players who played World of Warcraft back in the day might remember the times when you needed to count every spent penny and the times when gold farmers roamed the Azeroth on their super expensive epic mounts. In vanilla WoW, gold was everything. And we’re here to help you save as much of it as possible. So, without further due, let’s dive in our World of Warcraft: Classic gold making guide.
“As we’ve discussed before, the nature of WoW Classic sometimes invokes different memories for different players, and this leads to certain misconceptions for some about what is or isn’t working as intended,” Blizzard wrote in its official forums. While the developer did not reveal the specific numbers, there seemed to be too many bug reports for things that were actually working as intended.
Only really to expand on Gráinne's comment as regards the 'collecting' and 'roster development' sections - which are, as said 'distinct' although they are intrinsically linked - I would like to point you in the direction of the in-game Achievements > Battle Pets > Collect tab. There are a series of achievements called Raiding With Leashes, pretty much all of which can be completed via the auction house - if you have the gold/inclination - or by completing old raids.