Skilling up cooking is fun for many players. Not only do I advise taking it, but gather more meats than you actually need. Many people are too impatient to go out and get their own meat, so they'll happily buy it off the auction house. That's where you come in.
These four meats make up the Great Feast, which serves a whole party.
Rhino - Some in Storm Peaks and others in Borean. For you non-AoE grinders, there are some spread out around Sholozar.
Chilled - I wouldn't eat this raw, but it drops off of every single beast type mob. You'll get quite a few while farming the other types of meat. It's also the most common meat, so it doesn't sell for a whole lot on the auction house.
Shoveltusk - On the other side of the world as mammoths and rhinos are the shoveltusks. Their flanks sell nicely, even though they're really easy to take down. They travel in herds, but are neutral (similar to rhino and mammoth), with a few aggressive types spread out here and there.
Mammoth - Big, mean, and scrumptiously delicious. Grab a chunk o' this beast from Borean for you AoEers, and for single-targeting try the higher level ones in Storm Peaks.
The Fish Feast is higher level than its 'great' counterpart, but you have to have a high fishing skill to make farming these more profitable. Wowhead has excellent info for each fish on their page, so take a click if you find yourself desiring to cast a pole.
Other high-demand meats to keep an eye on include Worm Meat.
...is a fairly straight-forward profession. One that I can't really touch upon because it's so direct. It combines well with cooking, as just about all the beasts you kill can be skinned. If you know any skinning friends and you're going AoE farming on mammoths, invite them! Not only will they be greatful to you, they may even but you a portion of their skins if you kill things fast enough. Hope for those Arctic Furs!
Three types of minerals exist in Northrend soil, each one more rare than the last.
Cobalt Ore - Okay, I lied. Cobalt sometimes goes for more than Saronite because there are fewer nodes, as well that everyone needs Cobalt ore to skill up their blacksmithing and jewelcrafting to Saronite levels. Cobalt is best mined while leveling up, but if you have a flying mount, apparently Zul'Drak and Howling Fjord have the most deposits.
Saronite Ore - The most common end-game ore. Icecrown and Sholozar are the way to go.
Titanium Ore - Un-prospectable, but used for many recipes. Very, very hard to find, but plenty will show up while on your Saronite route because it only spawns in saronite/cobalt nodes.
For the most parts, herbs are easier to find than ore. Farming for these is less competitive, but there are still a few things you should know.
- Borean and the Fjord have mostly Goldclover.
- Avoid Dragonblight, as it's all frozen herbs, which can be 1-3 of just about any low level herb - even ones you're not after.
- Frost Lotus (a hot seller) can be found equally from all Northrend herbs, so if you're seeking those, pick a zone with a lot of nodes. Icecrown, lower Zul'Drak, and Sholozar come to mind.
- Talandra's Rose is just about only found in Zul'Drak. If you dislike that zone, then stock up a lot at once.
If you are an alchemist, I suggest seeing what potions and elixers you can make after a long flower-picking session. You might be able to sell the potions for more than you could the combined flowers. But sometimes, it'll just be more profitable to sell the raw flowers.
What do you sell?