Make money in game with low risk high reward tourneys, avoid dueling early on, as you could end up losing your 10,000 TC force (cry). And once you've gained enough money from that. Start working the market. Buy items from other players at the cheapest prices you can get off them. And then resell them once their price goes up. But this doesn't only go for marketing, if you're actually looking for new active items, this is a great place to go. You can get items worth up to 30,000 TC on the shop for 3,000 TC on the market (player to player, not the actual market.)