[get] to first base with {sth}
1
to achieve an initial level of success in dealing with a particular task, situation, challenge, etc.
The idiom "get to first base with something" originated from the sport of baseball. The first base is the starting point, and a player must reach it in order to advance to the next bases. If a player reaches all four bases and returns to home plate, they score a run for their team. It is an idiom often used to describe initial progress or success in a project or endeavor.
- By the time we launched the app, we had already gotten to first base with many potential users.