First things first, accumulate six months’ of cash as emergency savings. Then you can start investing.
From there, it makes sense to try and set up a monthly investment plan, where you set aside a certain amount of money each month and stick to that schedule. If there is any extra money in any given month, put that away too.
Once you build up a few thousand dollars, you can start buying broad-based ETFs or mutual funds to gain diversification while also getting equity exposure for growth.
How Should I Invest my First Thousand Dollars Saved?
How do I Calculate my Expenses?