>>17280820KJV. I don't know why every established Christian denomination seems to start with the OT but they really shouldn't; it's primarily there as a reference for the NT.
Start with the NT; Matthew, Mark, Luke, John, Romans, Acts, and Revelations, in no particular order.
Remember fren: no one has ever read the Bible, when they say they have it's a dead giveaway that they're full of shit. At best they're reading it. I have gone through the Bible cover-to-cover at least 6 times now over 30+ years, but I'm still reading it. And for the love of God, don't forget to set it down if reading it becomes a chore; reading it should be something one does because they want to, not because they feel obligated to.