A Study of The Gospel of John is not intended to teach you, but rather is a book to help you study The Book of John. While there are some facts and theories presented in the book, its main purpose is to give you a helping hand, or a boost, now and then as you study John's Gospel.
A Study of The Gospel of John is not for the person who does not want to put forth an effort to study. Paul said, in 2nd Timothy 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth. Paul did not say to simply read, he did not say to sit and listen to someone teach, but what he did say was to study. To study means that you have to get in there and work; dig the truth out; search to see what it is that God is trying to tell you; and then you can hopefully understand what God would have you to learn. And the only way you will ever accomplish this is to pray, ask the Holy Spirit to help you to understand, and work. But sometimes we need a helping hand, and that is what this book is for, to give you that helping hand, not to do the work for you.