Hi, I hope you have fun around here.
You wait one week for the payout. It depends on the votes coming from other users and their values (accounts with a big stake in the blockchain have more power and everyone can decide to vote with a weight between -100 and 100%).
All secondary tokens exist on a side chain. You can trade them all on Hive Engine. If you want to use Hive there you need to change it to Swap.Hive at 0.25% fee. Some are obtainable from post payouts too if you use certain tags (if you are into dCity, #archon is the best start).
Your next step depends on your budget. You can either buy a couple random cards to kickstart the quizzes or just buy stuff gradually on the market. Let's say one Forest to have a SIM producing building and then probably one more worker card to staff it. Do not spend the budget at once so that you can always buy what you need.
Have you joined the dCity Discord server?