So, are the Apocrypha books reliable? Should they be included in the biblical canon? To answer these questions, and to consider some of the arguments put forth by it's defenders, I would like to offer the following helpful resources.
In this article, apologist Josh McDowell answers the questions 1) What is the Apocrypha? 2) Why aren't these books found in Protestant Bibles? McDowell's article is a great place to start your study if you are new to the Apocrypha books.
Moreover, Dr. Norman Geisler, in a two part article, weighs the arguments for and against accepting the Apocrypha into the biblical canon. Check out part 1 here and part 2 here.
I hope these resources help!
Courage and Godspeed,
1. Norman Geisler, Baker Encyclopedia of Christian Apologetics, "Apocrypha, Old and New Testaments," p. 28.