This 640-page handbook is worth adding to your library:

Joel B. Green and Lee Martin McDonald, eds. The World of the New Testament: Cultural, Social, and Historical Contexts. Grand Rapids: Baker, 2013.

You can view the contents and contributors via Amazon’s “look inside” feature.

Related:

1. Is ‘Background Information’ Ever Necessary to Understand the Bible?
2. Extracanonical Jewish Literature That Is Significant for NT Studies
3. The Importance of Extracanonical Jewish Literature for NT Studies