start out with
start out with (someone or something)
1. To begin some journey or undertaking with something in one's possession or at one's disposal. The contestants start out with just a single backpack containing a few essential supplies, having to find the majority of their food on the island itself. I started out with nothing, not even a penny to my name. Now look at me—one of the wealthiest women in the country!
2. To begin some process with some particular thing. For this recipe, you'll start out with three cups of flour that you'll need to mix vigorously with eggs and butter. We started out with a rough prototype that was developed into the final product.
3. To originate with some particular symptom or effect. At first it started out with a bad cough, but now I've become feverish and nauseated, so I think I ought to see a doctor. The economic crash started out with a collapse in the subprime mortgage market in the US.
start out with someone or something
to begin something in association with someone or something. I started out the project with Jeff, but he had to be replaced. We started out with the Acme Corp., but they could not handle all our work.