simply do your research and made your personal thought, is the only thing that i have learned
This is simpliest for a beginner but i have some other ways to share that actually i got some idea what is altcoin need to choose.. coinmarketap is one of the place where you can see all of altcoin in rankings.. most of altcoin that i choose is top 10 or top 20 depends if there is trending coin in top 20.. Those altcoin for me are worth it to buy and sell it in the right time..
The same thing I did here, before buying an altcoins.
I checked in the coinmarketcap which altcoins has a
potential in the market. I buy altcoins which is at lower
price and sell it when I reach the profit what I want.
This option is also good because you can know the worthy of the coin value but if the bitcoin price rises that is the time to buy the good altcoin as the prices will crash like what is happening right now , so it is a good time to buy some altcoins like etc, dash etc one more coin ICN is also worth to buy as in long term it has very good potential to grow