The Gospel for Muslims: An Encouragement to Share Christ with Confidence by Thabiti Anyabwile is a primer from an ex-Muslim on tips for effectively sharing the gospel with Muslims. The book is broken into two sections, one about the gospel and one called "As You Witness." Each of the eleven chapters are short and comprised mainly of practical tips, though there are some personal stories from Anyabwile.
While there are good practical tips, there is nothing new or super unique about this book, except for Anyabwile's personal experiences. The main components of sharing the gospel with anyone regardless of religious background, is knowing the truth and sharing it and depending on Holy Spirit to do the actual work in a person's heart. Almost all of the advice given in this book could be applied to sharing the gospel with anyone.
Overall, The Gospel for Muslims is a good resource, but not a great one. It is short and easy to read if one is pressed for time, or needs a quick boost of confidence.