Watch videos from these three and you will learn a lot:
Ben Felix
Plain Bagle
Two Cents
Avoid any youtubers that give advice on specific stocks to buy. All mentioned above are professionals, with different specialities within finance and personal finance.
Also be very skeptical about cryptocurrencies. If you really want to invest in it, then consider a very low allocation. Maybe 1-2% of your net wealth. Most cryptocurrencies and projects are a scam. The youtubers I suggested do not promote crypto, or specific stocks.