I am completely new to holding altcoins, I have two of them, USDT and AIRT. Both are absolutely different, the only thing they have in common is the network on which they developed. Profits are different as well as the trading situation and the value in the rest. I keep them for a month in total. For AIRT, I decided to have a stack method on their website where NFTs are available for creation and sale. The price of Presale is higher than the current price, it is predicted that it will be sold for more.