The phrase "first foray" means the initial attempt or experience in trying something new or entering a particular field or activity for the first time. Full definition
This was my very first foray into our test kitchen and, I have to admit, I was scared that this dessert wouldn't turn out. (recipechatter.com)
This was the companies first foray into actually buying land and developing a mega project on it. (goodereader.com)
I want this to be an exciting first foray into the world of the biblical texts, so that as you enter this adventure the journey is fun and filled with meaning. (redeeminggod.com)