The appendix contains the following 7 topics:
How to Treat a Disfellowshipped Person
Head Coverings- When and Why?
Flag Salute, Voting, and Civilian Service
Blood Fractions and Surgical Procedures
Gain the Victory Over Masturbation
The Bible's View on Divorce and Separation
Resolving Disputes in Business Matters
Some of these topics, such as disfellowshipping and flag salute, are also covered in the main text of the book with references to additional material in the Appendix. I don't think the purpose of the Appendix is to hide information. Keep Yourselves In God's Love is a book worth reading, but more for what it does say (and how it is said) than for what it doesn't.
Besides, isn't this book designed for newly baptized ones or those who are very near to being baptized? By the time they even get to this book, or to a certain part of it, it may be too late to back out. If you want to talk about deception you should look at what is or isn't mentioned in the book What Does the Bible Really Teach as that is the book designed to teach someone everything they need to know in order to be baptized.
jabberwock