I save to invest. let me explain. I received $20 for a marketing offer from my client on my paypal. This is very small amount to invest in anything. I will have to continue working further and earn more money so that I can have $100. If I have $100, I can use this money to buy shares. Therefore, in my opinion before you can invest, you need to save money. However, for some people who already have money, this might not be necessary as they can invest right away. For most people saving is the first step to invest.