This is a must for pastors and elders. For the month of May ChristianAudio.com is offering Baxter’s classic book in audio format (mp3 or wma) as a free download. Just use the coupon code MAY2007 during checkout. This book is very challenging, but also very rewarding.
Christianaudio is a good resource, however discernment must be used in selecting resources here. For example they have a page devoted to emergent guru Brian McLaren who challenges the clarity and authority of Scripture.