My initial recommendation would be Peter Green’s Alexander of Macedon. While not reflecting the latest research it is comprehensive - more so, as one would expect from a biography, on Alexander himself than on Macedon and the Macedonian army - and highly readable. Robin Lane Fox’s biography Alexander the Great is of similar vintage but still well regarded. There is a more recent work I would consider worthy of attention by Paul Cartledge, Alexander the Great: The Truth Behind the Myth.
An interesting view of Alexander’s generalship can be found in a book by Barry S. Strauss called Masters of Command: Alexander, Hannibal, Caesar and the Genius of Leadership. It’s a comparative study of Alexander, Hannibal and Caesar, essentially as strategists. (Spoiler: Alexander doesn’t come out on top).
I’m sure others will suggest books with the background information on Macedon that you require, as well as other biographies and studies of Alexander’s generalship and personality. I know, for example, that one fairly recent work focuses on his (supposed) alcoholism; I imagine this would be a little too specialised as a starting point.