Long term coin investment I think you should choose BTC and ETH. These are two potential and safe coin in the cryptocurrency market. They first appeared on the market and flourished to the present time. Their prices are always the highest. Therefore, you should choose BTC and ETH for long-term investment. Their futures are getting higher and you can easily sell them for profit.
The prices are really high now, I would wait a while before investing in anything that looks like it could go cheaper. Learning crypto has a lot of usage if you want to learn how to earn money.