yes, some pretty good suggestions, especially for beginners, at least the suggestions above can minimize investment losses. Besides that, you also need to pay attention to financial management, my advice is not to invest in one coin, if you have a lot of money, prioritize investing in BTC and set aside some for top altcoin investments.
For now, it is better to invest in YFI tokens and DIA tokens which have just been successful in the past month, because the two tokens that I said are in good condition and even always go up in price from day to day, for BTC it is good but someone also won't wrong if you want to take advantage of the opportunities that are clearly visible on the two tokens.