Discipler's guide to encouraging the growing believer. This book is designed to enable you to personally follow-up new believers and new members as they enter the fellowship of your church.
I read assigned portions of this for class, not the whole thing. It seems to be a good resource for new believers. It's a one-on-one discipleship program that comes with a discipler's guide. While I would take a less formal route in discipleship, the covered material is good.