You can’t go wrong with a mage. In fact, Mage was the most popular class in World of Warcraft: Classic due to their ability to farm with ease. Back in the day, the player majority even leveled mages as alts in order to gather gold quickly. In addition to their monstrous ranged DPS, mages also have tons of useful utility. As a mage, you’ll be able to conjure food and water, place portals to the major cities, and even earn gold from doing so.

Fifteen years of iterative design means that the World of Warcraft that existed in 2006 is dissimilar to World of Warcraft: Battle for Azeroth as it exists in 2019, even if you’re playing the same content. The cumulative effect of thousands of tweaks means that pinpointing exactly what made Classic so special is a nebulous undertaking. Flying mounts, for instance, were a welcome addition when they were introduced in The Burning Crusade. It eventually became clear to players, however, that the convenience and fantasy they offered came along with a number of significant drawbacks like reduced interaction with topography, enemy NPCs, and other players. In spite of this, flying limitations are met generally with negative feedback on the part of BFA’s community. Such conveniences are difficult to unlearn.
HOWEVER, I did find out that there was an exploit to get around it (one of those rare exploits where you would WANT a bit of lag). Basically if you spammed “X” to sit/stand/sit/stand, then if a mob hit you while you were sitting and right as you were standing up, then it would register as a crit, but on the server side you would be standing, thus allowing the ability to proc.
Extract ConsolePort to Interface/Addons. The addon can be downloaded through the Twitch app too. Make sure the addon is enabled when you log in to the game. Install WoWMapper and connect the controller to your PC via cable or bluetooth. Make sure the controller is recognized by your operating system. Log in to the game and make sure ConsolePort is enabled. Now it's time to choose your controller layout. Grats, you can now start playing the game with a controller. (Optional) Enable Action Camera for extra immersion by typing /console ActionCam full, /console ActionCam basic or /console ActionCam default, depending on whichever you prefer most. You can turn it off by typing /console ActionCam off command.
Druid is one of the most versatile classes across all of World of Warcraft Classic. By picking Druid you will have plenty of options to choose from while leveling. However, in the end-game, most groups will expect you to heal, though, Feral and Balance druids are also very desirable for their Innervate and Rebirth abilities. Additionally, various animal forms will make traversing the world into quite an uncomplicated task.
“By the way, one of these codebases [Vanilla WoW] is extremely buggy, and we had already solved a lot of those [bugs]. But we can’t solve them [this time around] because... ‘reasons’ if we’re thinking about the Classic timeline. And so we really struggled with it for a very long time, and one of the things that we talked about when we were discussing different ways to do it was to do what’s called a ‘fork.’ So we did a fork of our existing modern server stack and then reimplemented the systems that we needed to support Classic WoW. And made sure that the tuning was right and imported the old data, we had the old code and a way to compare. Having the backend tools, and the backend server, and the modern hardware was a requirement to realize this project.” Essentially, what the team did, was teach modern WoW to speak old Classic data.

Most people who have spent years playing massively multiplayer online games will tell you that there's something special about the first one you played, too—and WoW was the first for many people. You can become so swept up in the uniqueness of your first experience that you overlook many flaws. It's likely many look at WoW Classic with rose-colored glasses, just as many simply forgot which features were added when. And some of today's WoW players may be too young to have even played vanilla WoW as it once was.