1) King James Version Bible (Companion Bible by Kreugel publications is recommended).
(But see note 1 below.)
2) Strongs Exhaustive Concordance (Hendrickson version recommended)
3) Green's Interlinear Bible (Hebrew-Greek-English)
4) Goodspeed's Apocropha (see note 2 below)
5) Smith's Bible Dictionary
Note 1) The Companion Bible has many useful and informative appendices and commentary.
Remember though, that the commentary and the appendices are words of man. If you question them, then use only the KJV
text portion and the Strongs to arrive at your conclusion.
Note 2) The Apocrapha was originally published with the KJ bible, placed between the
old and new testaments. Even this version did not contain the entire Apocrapha. SOME versions of the Goodspeed contains
the entire text. The way you can tell if it is complete is to see if 2 Esdras chapter 7 has 100+ verses.
Some (RCC) versions did not include the verses above 70 for reasons which will be obvious if you read the verses.