"So Jesus said to them, 'Truly, truly I say to you, I am the door of the sheep...I am the good shepherd; the good shepherd lays down His life for the sheep'" (John 10:7, 11, New American Standard Bible).
The book of John has revolutionary truths about who Christ is, how He lived on earth and how God saved us through His sacrifice. A couple months ago, a video tool was released by BibleStudyTools.com and www.godtube.com of Jaye Martin describing concepts we can learn about Jesus in the book of John. We recommend checking out more videos released continuing the study of the same subject. You can find these videos by going to www.godtube.com and searching "Jaye Martin," or you can follow this link: Video Tools - "What is the book of John about?".
Photo above of a shepherd in Ireland found on vancouversun.com.