How to deliberately practice and train your ability to choose cryptocurrencies?
A simple method to train your ability to choose cryptocurrencies is to pay attention to the relative exchange rates of small coins against BTC. You will form a matrix with two coordinates: one coordinate is rising or falling, and the other coordinate is outperforming or underperforming. This will create four quadrants: outperforming BTC when rising, underperforming BTC when rising, outperforming BTC when falling (less loss), and underperforming BTC when falling (more loss).
Among these, there is a type of asset that can outperform BTC when rising and underperform BTC less when falling; this is the best asset choice, but it is unstable.
What you need to practice is to monitor, judge, and discover such statistical relationships over the long term, so that you can identify these assets with high growth potential, decent quality, market attention, and that may outperform BTC. The crypto market is not considered a weak form efficient market, so technical analysis can still yield excess returns.