Take it from Semine cause thats the best starting point, train lockpicking with Miller Kreyzl's chest first but dont waste time there too long. Loot gear from defeated enemies and load it on your horse since weight matters, then sell to blacksmiths for good coin. Might be interesting that the Nomad Camp merchant buys stolen stuff no questions asked.

Once youre comfortable with basic locks, hit the town chests at night and start brewing potions from herbs you find - apothecaries pay well for those. Quests around Kuttenberg and the bathhouse tend to pay better, and picking up Riddler Barleys riddles nets you easy money just save before gambling with him.

If youre crafting, focus on Work Axes and Horseshoes since those sell decent especially with the Artisan perk and remember, haggling matters a lot when selling anything. Speech skill helps with prices too so might wanna work on that while youre trading around. Just avoid getting caught stealing or youll lose more than you gain in fines and reputation hits.