I quested a little, mostly completed quests in Badlands that needed no actual performance, just buying items in the AH. Reached lvl 38.5.
Most of my business activity were selling bronze and steel and buying materials for my enchanting. Thelnia also got a couple packs of investment.
Account balance: 1980G, 78 auctions, 50 bids, approximately 2200G at Thelnia.
Found an inscription leveling guide on Wow Economist. Don't forget that you don't have to be inscribe to recive inscriptions. The plus that you receive by being inscribe are certain offhand items. If you don't need them, don't be inscribe! Don't forget that herb prices will be very high, you could save thousands by not choosing this profession.