There are numerous texts that could be suitable for supplemental reading, but in my opinion one of the best is the classic, The Practice of Godliness by Jerry Bridges. There are also a number of devotional texts dedicated to the "Fruit of the Spirit" itself, such as The Fruit of the Spirit, by Leroy Brownlow. Numerous books on discipleship or spiritual living will also provide insight.
Most of these sorts of materials can be ordered online through a really terrific internet bookstore, amazon.com. They have a huge inventory (over 2.5 million titles!), they ship immediately, and you can have the books in just a few days. You might also try the online catalog of Christian Book Distributors. I've used them quite a bit and have been quite impressed with both the extent of titles they carry and with the quality of their service.
4/17/98