The best way for me, if was a newbie, would be something like this: I decide to put from 2% to 5% of my monthly earning to cryptocurrencies. I download mobile app (according to you location) that allows you to invest directly from your account. Or, for example, invest your coffee money to crypto. It is possible to start with small sums.
2% to 5% of your monthly income for cryptocurrency investment is a small ratio for investing into something. If total your monthly income can up to $100,000 I will change my opinion because 2-5% is enough for cryptocurrency - an investment type has high risky at the moment. But if that amount just 20-50$ for investing in cryptocurrency, I think you should to raise that amount up to at least $100 for every month.