I've been reading the New Oxford Annotated Bible with Apocrypha
based on the "Revised Standard Version" translation. It seems to be a good, scholarly
translation. It's an expanded version of the Bible I had to buy for freshman Civ in
college (that version didn't have the Apocrypha, and is now falling apart). The footnotes
are pretty good, but brief. The rest of the information I looked up from other sources
on the web. For example, in Jeremiah 25:26 is has "And after them the king of
Babylon shall drink." with the translation note: "Heb Sheshach, a cipher for Babylon"
and the footnote: "Babylon is written in the Hebrew text as "Sheshach"; this kind of cipher,
in which the letters are substituted in reverse order of the Hebrew alphabet, is called
"atbash" (see 51.1, 41 n)." Everything I wrote beyond that I looked up other places, but
the notes are enough to point out topics of interest and get me started.