What you do is a classic technique, because you are basically buying at a low price and selling at a high price. but what we need to know is that the selection of altcoins is very influential on our profits. so I think that choosing an altcoin requires careful analysis
Actually we have our own strategies in trading that we already tested and comfortable with to try on. Here in forum we have talked so many kinds of trading strategies that was proven and successfully used by other traders but that doesn't mean it would be fit with you too. But to be honest to become an effwctive trader especially as a newbie trader it's a must that we should know about the basic. Selling at high price and buying at low price was one but I guess I may add to my list of basic skills that we need to know was the knowledge about reading or analyzing the chart of crypto that you are going to invest.