Bitcoin is the best crypto for newbies, but if you are ready for deep research and learning you can go for altcoins, mind you, altcoins are not as safe as Bitcoin but altcoins have the potential to 30x or even 100x your money, you can only pull this off successfully if you do good research on projects that are very useful as we speak. Many altcoins are scam but few stands out to be the best, like Polygon and Binance coin (BNB).