How Startup Funding Works from Funders and Founders co-founder Anna Vital does a great job of visualizing the split of equity at different stages of a company’s life.
A hypothetical startup will get about $15,000 from family and friends, about $200,000 from an angel investor three months later, and about $2 Million from a VC another six months later. If all goes well. See how funding works in this infographic:
Is dilution bad? No, because your pie is getting bigger with each investment. But, yes, dilution is bad, because you are losing control of your company. So what should you do? Take investment only when it is necessary. Only take money from people you respect. (There are other ways, like buying shares back from employees or the public, but that is further down the road.)