Congratulations on all your interest and enthusiasm. I'm surprised by how many people say the same thing, that they are leading a study group in their parish (or wherever). I had trouble doing just that, in a number of places.
Put on your short-term reading list
THE JEWISH PEOPLE AND THEIR SACRED SCRIPTURES
IN THE CHRISTIAN BIBLE
THE INTERPRETATION OF THE BIBLE IN THE CHURCH
Pontifical Biblical Commission
Verbum Domini by Pope Benedict XVI
You can download these in a matter of minutes from the EWTN website.
The first and third say among other things, that you can use Jewish commentaries on scripture, with caution, knowing the difference between Christians and Jews. This comment was probably intended, first, for Catholic Bible scholars, then others like us.
The first states emphatically that the New Testament wouldn't make sense without the Old Testament.
The scond one is hard to read (for me). It takes a long-winded approach to saying that the Church does not endorse any one single approach for studying scripture. For the novice Bible student, it says to read the Bible with a commentary book nearby. This is not idle advice, because you will hear priests say that you need to have a qualified person teaching you, to study the Bible.
Verbum Domini basically says that if you've read all those encyclicals, the Vat II document, and others, and the Catechism that's still not enough. This document was the result of a personal effort by our Pope Emeritus, who is a distinguished world class Bible scholar.
In addition to those, you should obtain and put Benedict's three volumes on Jesus of Nazareth on your reading list. There's an enormous amount of insight and scholarship in these books. The first of these books has a lot on countering certain Biblical critics.