World of Warcraft: This and That

[Thorium Ore]
This one is a tricky part. Thorium is pretty rare and are farmed by a lot of players, because it's damn expensive.
Get 5 skill by mining Small Thorium Veins. Then visit your trainer and learn how to smelt Thorium Bar. You should buy around 50 ores from the Auction House and smelt ores until 270 (you can mine nodes until 270, but it will be a lot slower), so you will need only 5 points until you can mine Rich Thorium Veins (you can mine them right away, if you have this enchant: [Formula: Enchant Gloves - Advanced Mining]). When you reach 270, you can sell the Thorium Bars at the Auction House for almost the same price you bought them.
I only recommend Winterspring for players level 65 or higher. You can go there at lower levels too, but there is like 2 place where you will have hard time to get in and mine those Rich Thorium Veins. Eastern Plagueland is better if you are lower than level 65. If you go to Winterspring and you play on a high populated server, usually there is always someone there who already farm the area. It's the best place and if you can't find nodes there, it's because the place is already farmed by someone else, not because the place suck. If this is the case, go to Silithus which is also a really good place, but I also don't really recommend it to lower level players, all of the Rhich Thoriums are in caves there which are filled with level 60 mobs, of course you can clear the caves but it will slow down the leveling speed.

Winterspring
Silithus The red areas are the caves. There are usually 2-3 caves in every red area and they are filled with Rich Thorium Veins. You should be using Gatherer by this time already, it really helps you a lot. When you reach 275, you can just go from caves to caves and you can skip the Small Thorium nodes.

Eastern Plaguelands