If you choose to invest in a short time then bitcoin is much more profitable. But if you have a longer time then gold is a much safer investment. It all depends on the condition, because there is no perfect thing in this world.

for now airdrop has not been legit, hopefully the future of airdrop many legit.

What are the rules of this game and how can we gt reward

Trading is only for hodlers you need to have patience in this game

I you don't have money to start mining or trading, get some money on faucet & reinvest.