I once heard a man say, "A person who can read but chooses not to do so....is no better off than an illiterate." I believe that as leaders, we should be readers. If you drive much, consider getting books on CD or MP3.
Here are some books that I have read and highly recommend for church planters:
Launch - Starting a New Church by Scratch by Nelson Searcy
The Purpose-Driven Church: Growth Without Compromising Your Message & Mission by Rick Warren
Community of Kindness by Steve Sjogren and Rob Lewin
Purpose-Driven® Youth Ministry by Doug Fields
For House Churches / Simple Churches I highly recommend - Organic Church: Growing Faith Where Life Happens by Neil Cole