As I was learning to trade, I used BTC-USD trading pairs. I've been quite trusting stablecoin and BTC but I'd never stop there, yet I move to try also several altcoins and change coins in almost every trade until I've got a good market formula. It can be done as well as long as you are not afraid to take risks. Take the feeling that you are curious about something that will happen after trying new trading pairs as we never know if this will give you more profit unlike just staying BTC-USD pair. And I've noticed that it was good to trade in a highly volatile coin, buy and sell option is too fast to fill where we can generate a profit so fast as well.