IN GENERAL
Right off the bat, between these two books, I would recommend HSYB, since BSBS is simply the first part of HSYB. BSBS is a very simple introduction to inductive Bible study, whereas HSYB goes into much more detail.
Both books are easy to read, even HSYB, the more in-depth book of the two. In fact, for every part of the process, there are easy to follow steps. HSYB is not the theory of inductive Bible study, but a practical walk-through of the process.
SUMMARY
The book is divided into six parts. The first two chapters are an introduction. The rest of the chapters of the book are divided into five parts. The first introductory chapter, If You Want to Know God's Word, is written as a letter to the reader by the author, giving a little background to the development of the Precept Upon Precept Inductive Bible Courses. The second introductory chapter, The Joy and Value of Inductive Study, gives a very broad outline of the rest of the book. Arthur writes, "Inductive Bible study draws you into personal interaction with the Scripture and thus with the God of the Scriptures so that your beliefs are based on a prayerful understanding and legitimate interpretation of Scripture--truth that transforms you when you live by it." (p11)