Questioning Evangelism got a good review on the 9Marks site when it came out.
It’s currently available free in its Kindle edition at Amazon for a limited time.
Thanks Gospel eBooks.
The blurb:
A much-needed look at sharing Christ with unbelievers, based not on the techniques of guerrilla hard-sell tactics, but on engaging questions and caring interaction. Filled with humor and stories, this book provides a challenging yet encouraging look at evangelism in our world today. This volume argues that asking questions and starting meaningful conversations is a far better method for sharing faith than prepared lectures or statements. It gives advice on what people need to hear in response to the world around them.
Author was raised Jewish and has a unique, rabbinical outlook on evangelism
Encouraging and useful
Easy-to-read, conversational style
mgpcpastor's blog 
Was not free when I looked…
Too slow.
That’s what you get for spending the day celebrating your anniversary with your wife instead of trawling the internet.