Help me write a book...

Good morning. I'm new to the forum, and I've come here to get some input from other individuals. I'm a published author, and I am working on my next publication. It will be a guide to self-discipleship, probably a five book series. I'm designing the book from an open point of view that provides direction for Christian growth without promoting established doctrines. The goal of the book is for the individual to find the facts about different Biblical subjects, and be able to make a personal decision about what the Bible says. I have never been one to force my beliefs on another. That said, I am currently working on the finalized rough draft. At the end of each chapter will be a question and answer session, and that's where I need some help. My current two chapters are on Sin and Salvation; I have provided direction on questions such as "Wouldn't an all-knowing God foresee the issue of sin", "What happens when a child dies", etc. Does anybody have some good questions to either of these subjects, either as a new convert, or from the perspective of a new convert? The more answers I can provide, the more practical this book will be. Thanks so much and God bless!