Kurzen's Compound (marked BLUE on the map) - Colonel Kurzen was once a very talented Stormwind Officer. He was sent with an expedition to the Jungles of Stranglethorn, where he fell victim to Mai'Zoth, a powerful Ogre Mage and his foul magic. Majority of Colonel's troops are still loyal to him and provide Players with some valuable Loot. In this spot, you will encounter Kurzen Jungle Fighters, Kurzen Medicine Men, Kurzen Wranglers, and Kurzen Commandos. These Humanoids drop a lot of Silk Cloth (that can be generally turned into Bandages and Vendored), valuable Wool Cloth (the main source of Gold from this spot, check the AH prices), Fadeleaf (Medicine Men), Liferoot (Medicine Men), 12 Slot Bags (Commandos), Vendor Trash Items, and some Pocket Money. This spot is especially good for Rogues, as the ability to Pickpocket mobs will increase profits by a noticeable margin. Recommended Level - 34+ (36+ to be extra safe, as Humanoid mobs can be problematic because they tend to run away on low health and pull additional enemies).
Isle of Dread Chimaeras (marked BLUE on the map) - The Isle of Dread, located near the Western coast of Feralas is inhabited by very dangerous, Elite Chimaeroks and Arcane Chimaeroks. These vicious beasts are rather difficult to kill solo (unless you are a Hunter or a very skilled Mage), so bringing up a Partner might be in order. These Chimaeras drop Vendor Trash Items (Brilliant Scale and Forked Tongue), but most importantly, they are the only source of the Chimaerok Tenderloin (These are used in the Dirge's Kickin' Chimaerok Chops Cooking Recipe that creates +25 Stamina Food, which is the best Food Consumable for Tanks in Classic). The Tenderloins can be sold on the Auction House for a very good price or Cooked and sold for even better profits (we have mentioned how to get the Recipe in the Cooking Profession breakdown above). The Chimaeras can also be Skinned for Rugged Leather, Thick Leather, and Rugged Hide, so Skinning Profession will provide so additional income from this Spot. Recommended Level 60 and a team of Two, unless you are a Hunter.
Tyr's Hand (marked RED on the map) - One of the Scarlet Crusade's Bastions, the Tyr's Hand is located in the south-eastern part of the Eastern Plaguelands. Scarlet Crusade members that can be encountered there have a very good Loot Table. The main focus here will be the Scarlet Archmage (which is an Elite, so farming them solo might not be possible for some Classes). the Archmage drops a lot of Runecloth, ~14 Silver worth of Pocket Money on average, and most importantly, the Formula: Enchant Weapon - Crusader which is very valuable to all Enchanters and achieves really high prices on the Auction House. Mobs encountered in Tyr's Hand can be Pickpocketed, so this is a quite good spot for experienced Rogues. Recommended Level - 60 (some Classes might be required to find a Farming Partner and go in as a duo).
The Horde 12-20 (Barrens + Stonetalon Mountains) guide has been rewritten and revamped. In addition, there has been numerous tweaks to the speedrun route to make things faster and easier to follow. Also, in case you haven't noticed I am now adding about 40% more info per step and redoing all the images. Unlike with my previous vanilla guides, I am now giving a brief explanation of where to go and what to do with each step along with any other helpful tips.