That's it, that for this you need to have elementary literacy, well, and enough free time). The latter is very often not enough. But the main thing all the same
that is what you need to do, invest wisely because sometimes we forget to think first when there's something that attracted to us, so sometimes we never noticed it caused it to us not good especially to our money. So be wise especially when you do investing or invest wisely because it will avoid us from losing money. Just dont easily attract to those promising ICOs, saying that you can get huge profit because sometimes its scam.
You wrote Just dont easily attract to those promising ICOs...and you are not promoting an ICO in your signature?

Yes there are scams but there are scams everywhere in the crypto world unfortunately, scammers are not only in the ICO space.