Authorship and Origin:

Ruth lived during the time of the judges (see the book of Judges). The book was probably written down during David's time. Based on the writings, it appears that Ruth was David's great-grandmother, which means she lived during the time of Gideon.

Overview and Significant sections

Much can be learned from studying this short book. It demonstrates that there was always a pocket of the faithful (or a remant) still left in Israel. The book tells a simple story and is interesting reading. Naomi and Ruth show wisdom and stamina in the presence of a very hard situation.

Significant sections:

For more detailed study:
Read Chapter 1. (the entire book is available starting here.)
The Concise Matthew Henry Commentary on this book. introduction of this book.
the World Wide Study Bible has Dictionary, Commentary, Scripture and sermons available on this book.