u/Great_Diamond_4627

Hello, I'm 18 and live in Europe. I'm still in high school until 2027 and receive around 470-540€ per month in stipends. I have about 4,500€ saved in a bank account and my expenses are very low (~€20/month for food at school).
I will likely continue into university where I'll also receive around €700/month in support. I don't need most of this money for living expenses and I'm not interested in short term or high risk trading.
I'm considering starting long term investing (likely ETFs) and slowly putting most of my monthly income into it.
My question is: Would it be a good idea to start investing this early, and if so, how would you structure it (risk level, percentage to invest vs keep in cash)?
Thanks!