In what order should I read Deadpool TPB's?

With the upcoming Deadpool movie, I’ve become interested in reading his comics. For reasons of both time and money, I’m not interested in hunting down individual issues, so trade paperbacks and collections would be the way to go.

My default preference would be to read them chronologically, unless there’s a compelling reason to do otherwise, but I’m having trouble even figuring out what the chronological order would be. When I search “Deadpool TPB” on Amazon, I end up with 5 entirely different TPB’s that all have “Volume 1” in the title. I’m not sure how to get started.