I like the dialogue as a form of philosophical text, and so this had intrinsic appeal to me from the get-go. Mele wrote about three different texts on this single subject: one for academics, another for a general public, and this, which is meant mostly for students. It offers some introductory information on free will and then dives right into the challenges, which are dismantled in a relatively intuitive way. Great one for dipping you toes into, and if you have any trouble digesting the material there are plenty of supplementary lectures online from the man himself.