Beginner willing to try Ethereum

Hi everyone,

I'm beginner at cryptocurrency and wanted to invest to Ethereum. I wanted to invest to it because for what I read and watch so far it is more than cryptocurrency. And also, compared to bitcoin, it is not limited and it create more Ethereum. When I saw the price, it is already over $4k now. I can't invest on full 4k as a start. Compared to other currency, where you can buy many stocks with little amount but I don't think they are stable enough if I wanted to make it a long term. I had little idea that ethereum that will be big in the future that's why I wanted to start investing. I wanted to get some advice on how to start and what strategies/options should I do to start investing. Please let me know and I'm willing to do research also for terms I needed to know. Thank you.