I have played World of Warcraft and blizzard games alike since I was 10 years old, it all started back in Diablo, StarCraft and Warcraft days. I love all Blizzard releases and would be honored to be a part of the closed beta for the Classic release and will definitely be turning in my free time for World of Warcraft more as I am suuper stoked to play! FOR THE HORDE!
If possible, avoid purchasing Gear from the Auction House - Ideally, you should be able to achieve level 60 without buying anything from the Auction House. This way you will save Gold, but possibly make leveling a bit harder for yourself. If you badly require an Item upgrade, and the suitable Item is available on the Auction House for a low enough price - buy it, but only if you think that the investment will pay for itself in one way or another (the main exceptions to the Auction House ban Rule are Weapons and Wands, as they make leveling much faster, and pay for themselves by allowing you to chain-kill more mobs without Eating and Drinking, which saves Gold and time).
Cold Eye Basilisks (marked RED on the map) - Western shoreline of the middle Stranglethorn Vale is infested with deadly Basilisks. These monsters are a good source of Heavy Leather and Thick Leather (we recommend Skinning for this spot), they also drop a lot of Vendor Trash Items (Curved Basilisk Claw, Intact Basilisk Spine, Large Basilisk Tail, and Squishy Basilisk Eye), Large Fangs (used in Leatherworking, Blacksmithing, and Alchemy Recipes), Wicked Claws (used in Leatherworking and Blacksmithing Recipes), 12 Slot Bags, and most importantly, Cold Eye Basilisks have a small chance to drop the Cold Basilisk Eye (a level 35 BoE Trinket, that can be very valuable, because useful Trinkets are rare in Classic). Recommended Level - 38+.
Whelgar's Excavation Site - This Dwarven excavation site was overrun by Raptors (Mottled Scythemaws and Mottled Razormaws). These reptiles are a great source of Medium Leather (you should have Skinning Profession if you want to farm here, as a very large portion of income that comes from this spot is acquired by Skinning Raptors). They also drop some Vendor Trash Items and Raptor Eggs (these are convenient, as a Cooking Recipe for them comes from a Quest that is located just above the Site) that can be used for Leveling up Cooking Skill. However, the best part about this spot is that both Raptor types present here drop level 19 Twink Gear (Feet of the Lynx, Sentry Cloak, Redbeard Crest, and Twisted Chanter's Staff) that will achieve astronomical prices at the later stages of the Game (drop rates are very low, so some RNG is involved, sadly). Recommended Level - 25+.