Getting For Students This workbook includes Pocket Principles® and Guided Discussions. How Can I Be Sure, Baptism, The Holy Spirit, The Bible, Prayer, Fellowship of Believers, and Future Growth. Available for Leaders Cornerstone Series Cornerstone, designed for both individuals and small groups, helps new believers become grounded in the faith and lays the necessary foundations for ongoing growth to maturity. It also reinforces growth and fosters renewal in more mature Christians. Cornerstone features Getting Started (Phase I), Knowing God, Understanding People, and Growing Spiritually (Phase II) and Bible Readings.