Honest Way.... to get abit of spare cash without cheating near start of game, pick some flowers & berries and steal some food and mix the ingredients and make some potions and sell them. Or just loot caves and enemies and sell what you dont need and so some side quests for some good armour and weapons you can sell.
Cheating Ways....
From GamesRadar
1. Orc Merchant
Entry Location:In the Kavatch camp
Go to the camp out side of Kavach. There in a tent should be a Lady Orc Mearchant. Equip a valuable weapon and hop on a horse. Sell the weapon and it should say you can't because it's equipped, but you will still gain the money and keep your weapon.
2. Infinite Money Glitch
Entry Location:
Imperial City Talos District
In the Imperial City Talos District is the house of a man named Dorian. Enter the house and kill Dorian. When looting his body, highlight his gold and press A...and keep on pressing. His gold will never run out, giving you access to infinite funds. At any time, you can return to Dorian's house to loot more money from his corpse. (Do NOT press take all or your game will freeze, it can't calculate how much gold to take because it never runs out. So only highlight the gold and press A to your desired amount.)
3. Easy Money
First make sure you have weapon thats worth a lot (exp. Akavari Sunderblade the one I used) and also make sure it's equipped then go to the Horse Whisperer Stables just outside of Anvil and get ready to do this part quick fist open the gate and then steal a horse and ride on out. Now follow the path to the tents below Kvatch and talk to and orc named Batul gra-Sharob but make sure you stay on your horse and barter her, but she has to be right outside her shop tent or else you can't barter her. Now with your weapon that's worth a lot of money equipped sell it to her but it won't go away it will stay in your inventory and you'll still get money for selling it but it will never leave your inventory,