To get your mount you should probably invest in at least one gathering skill. Sell everything you dont need in your inventory on the auction house and try to gather and sell as much stuff from level twenty onwards. A hundred 2moons gold is not a problem if you keep to buying skills and avoid buying items that give little to no stat bonuses.
Out of all the impacts had on the market place this was the area I found most affected. You will see tons of level 60-70 Bind on Equip gear and recipes that used to sell for 2moons gold, obviously you can now get easy gear replacements from quests and no one wants to spend cash on lower level recipes when they are sure a better version will be available to them soon. This all sounds like terrible news for all those who wanted to make money using professions or buying and selling on the auction house, but with change comes oppotunity!
Before level sixty you are really limited in your ability to farm copper, silver, depending on your level. Youve got about two general options. One is to do every possible quest for the quest rewards or go out and grind away on humanoid enemies. Humanoid enemies provide cloth that will sell well on the auction house no matter what, check our grinding section further down. Generally though, not spending too much in the Auction House will allow you to keep enough 2moon dil around to buy what you need skills, equipment, reagents, and repair costs.