I don't play, yet, I'm waiting on the PvE realm. What I remember from Vanilla though is sell everything, literally everything. Waste nothing. Vendor only the most absolute trash. There is a buyer for everything whether it be linen cloth, white armour, greens, even fishing up Rumsey people will buy it for RP etc. One thing I used to do, was to buy certain crafting recipes/plans that can only be bought, limited supply, from one person in the whole world and selling them on the AH for a massive markup. If Nost is true to vanilla, then the cooking recipe for Loch Frenzy delight is one such example. You could buy a few and lazy people, who cannot be bothered to trek to Loch Modan WILL pay 5, 10, maybe even 15g for it if there's not a lot of competition on the AH. If memory serves, there's a Gnome windmill north east of Menethil that has a few limited supply greens and crafting plans, and there's also a very highly sought after engineering (drangonkin I think) plan in Azshara in the Gnome house in the hills above the coast, but that might be above your level.
You could browse the AH and see what sells well as a gathered material like copper ore, tin ore or herbs. You could (if you haven't already invested a lot in profs) gather some mats to sell then unlearn the profession and take up one you'd rather use for your class like tailoring/ench.
Also, what warcraftselblatt said. For example, behind Durnholde is a lady who sells three limited supply leather bracers (Bear Bracers and some others), you could buy 1-2 with your 1g and sell them on the AH for 3-5g each to make a decent profit within hours I imagine.
If you see a BoE blue, like something leather in your level range, probably from Wailing Caverns, for a low amount, and it's the only one, buy it and resell it for 5 times the price. There is someone, somewhere who will want it and be happy to be pay it. Just don't mark it up too high so as to be unreasonable. Little and often I say, make a few g's to 15g per item, depending, none of this relisting a BoE blue lvl 16 staff for 1000g etc.,

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Most of my money comes from getting hard-to-find items and plans and selling them all. Or playing the AH. Not really relevant to you, but someone listed a Swift Lovebird mount from the Valentine's event. Obviously it cannot be obtained in September and people will either have to wait until February to grind for it, or buy the AH one. He'd listed it for 25K buyout, and on my server they sell for 100k. I bought it to quickly double my cash. Like a fool I relisted it for 60K and the buyer probably then relisted it for 100K. I should have asked for more, but there were no others on at the time for me to compare the prices with. I buy all cheap Runed Orbs and Forzen Orbs and, even though they're ridiculously easy to get, they still sell for a lot. Practice and you can play the buying and selling game

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It also depends on Nosts unique community. If it's level 60 heavy, then when they reroll alts they probably would be more than happy to spend their hard earned gold on easily farmable items like spider's silk, silk cloth and so forth, than farm it themselves. If Nost is top-lvl heavy, capitalise on it

. If it has a lot of new levellers, then you'll have a lot of competition. Don't be disheartened if your auctions expire 2-3 times, someone will eventually buy almost anything and you'll almost always make a profit.