Understand how it works first.

No need to invest much when you are learning.

Put all your money away for now.

Until you can take a dollar, and gain significant profits % wise with it ,and hold the profit value. And then do it a few more times with a few more dollars, and after months still maintain that value from your profits, then you have business playing this game.

Still, this only means that you have learned altcoins, and the basics of trading them. At this point, you are at least not showing up and handing your money over for nothing. Which is what is going to happen if you just go and invest any time soon. That would literally just be gambling.

Once, you have proven that you can make some profits, and keep them, with very small amounts, you at least have a chance. Even the most experinced traders can get burned.

The minute you think, "no, I have found the golden goose, and I must invest everything", go get out the popcorn, because you are about to watch all that money go POOF