Trek One: 'His Story' Essentials presents the same themes from the main Trek Bible study in a simplified structure. This condensed version of the main Trek One Bible Study features basic content from each lesson, making it ideal for new believers or young Christians who are just starting to grow in faith. Students can use the book in the same group with those working in the main Bible study. Order one per student who is starting to explore faith in Jesus. 5.5' x 8.5'. NIV 1984 Bible Translation.