How Jesus Runs the Church by Guy Waters is on sale right now at Westminster Books for 50% off. As somebody who bought the book for almost $15 and who has given the book away here on the blog, you all must know that we're big fans of this book, and especially at this price right now.
In the book, Guy Waters clearly and cogently defends the Reformed/Presbyterian understanding of church government. This is a good book for those who are Presbyterian but don't really know how their church government works or how it is taught in scripture. It is also for those who are evangelical by default but haven't had much exposure to discussion of church government. This was me up until a couple of years ago; back then ecclesiology was at the bottom of my list of theological priorities. Carl Trueman's recommendation of the book is even broader. He says it is for "any believer who wants to grasp what it means to be a member of Christ's church on earth." Highly recommended. And you won't find it at a better price. The sale ends April 17th.