In the long run trading is profitable and it is impossible that you will not learn when you started to trade. Because in the end that is going to give you profit that you never had before. And the more risk that you are going to take in trading by buying different alt coins that is going to give you better output where you'll say that trading is the best.
Yes when you will start to trade then you will start to learn but stay alert that not you learn each time with a lose. Trying different coins is better but before investing in any coin make sure that this coin is not a dead coin or is not running by a scammer. In long term you will earn with trade.
Trying different coins is good but it is going to be a better move if you are going to choose only the best coins. Study on know what are the ones that can give you better profit, because in the end you will realize that not all coins are profitable and instead of earning, you will have the time to regret that you invested.