World of Warcraft players who want more
WOTLK Classic Gold can never go wrong with Herbology, as Scribes need a lot of herbs. In addition to that, skinning is also great, as you can get a rare item called arctic fur from skinning, but this can be found everywhere in WOTLK Classic. The best thing you can do is make jewelry and engineering on your protagonist, which also means you'll 100% need an alt for mining so you can plant some paddles for your protagonist. And you'll also get herbs or skins for that character, so you can use it as a complete farming replacement. Career and character levels go hand in hand when it comes to preparation. Probably the strongest professions in PvE are jewelry making and engineering.
A new class has appeared in Wrath of the Lich King, called Inscription. The demand for herbal medicines will be greater than the previous classics. So if you don't already have a Herbology character, it might be a good idea to start leveling one up. Because herbalists will make a lot of money in Wrath of the Lich King. It's also a good idea to stock up on some ancient herbs so you can improve your inscription skills when they become available. In The Burning Crusade, people get a bunch of WoW Classic gold coins by selling jewelry crafting kits, which are basically just big bundles of materials for everything from crowds to the greatest jewelry crafting skills. You can do the same with inscriptions, so sell inscriptions skill boost kits or bundles.
Also, in Wrath of the Lich King, you can now buy some items for a profit. Buy black diamonds under 25 silver each. In Wrath, these can be crafted into prismatic black diamonds, which will reveal a random gem at 25 silver each. Set the vendor value of the black diamond to 25 silver. This means that any black diamond you buy at 25 silver will be shuffled by the supplier for a guaranteed profit.