Are you looking for a “Bible commentary” or “commentary on the Bible” and do not know where to start?  One place that may help you is www.abiblecommentary.com, my main Bible commentary web site.  I also own and operate http://www.commentaryonthebible.com, a Bible commentary web site that actually lists some good one volume Bible commentaries, some good sets of Bible commentaries, information about Bible dictionaries, Bible encyclopedias, Greek Bible study tools, etc.