I used this book for the written exam in finals (along with Surgery 1 & 2 and pharmacology of the same series, Medicine at a glance, Surgical talk, and for the clinical exam I used those little Pastest books - medical and surgical finals) I think Master Medicine is fantastic, getting the breadth and depth right, with the aim of improving understanding to ease the burden of tedious list-learning (which is required to an extent). So if you start early and have the time, this is a good book to build the foundations with - otherwise you might just want to go straight for the lists.
And don't ignore the self assessment sections! The series adds information not found in the rest of the chapter in the assessment bits.