Are we as Catholics not really concerned so much with the OT ? I notice at Mass there are a couple of readings for the OT by the lectors, lay people. And then the Gospels are read by a Deacon or Priest. I know we acknowledge and read it but our doctrines that are biblical are basically from the New Testament right? Other than the Magisterium and tradition.
Actually if all you do is Sunday Mass, it might seem so. Since Sunday Mass attendance is obligatory for all Catholics, you get the most concise picture of our faith therein. As Christians most of the basics require a focus upon viewing the Hebrew Scriptures through the lens of the New Testament.
However, Sunday Mass is really just scratching the surface. The next step down in importance of liturgical actions is the praying of the Liturgy of the Hours. Also known as the Divine Office, the major hours of each day are blessed with prayers from the Psalms, morning, noon, evening, and night, with a full reading from the Scriptures in the Office of Readings. Every four weeks you will have prayed through all 150 Psalms before beginning the four-week cycle again. You will also prayerfully read through all the major oracles of the Prophets and commentary from the Church Fathers regarding these over the period of a year. All Catholics ar encouraged to pray the Liturgy of the Hours. It is the official prayer of the Church.
Add to this daily Mass has longer readings from the Old Testament than Sunday Mass and will cover most of the major parts of the Hebrew Scriptures in the First Reading over its Two-Year cycle.
The Church recommends that we read and study the entire Bible regularly. In the United States the Old Testament of the NABRE has recently been released, a revision of the 1970 NAB text, and all US Catholics have been encouraged to see this as a call to read the Old Testament anew.
As a Hebrew Catholic of Sephardic heritage, I am what is often called a Crypto-Jew. For centuries my family kept their Jewish customs alive and well even though some of us have been Christians before any Gentiles joined the Church! Today, especially since the end of the 20th century, the Catholic Church has encouraged me and other Catholics of Jewish heritage to live our ethnic customs freely and fully, just as others of other ethnicities live theirs. Reading and studying the Old Testament or Tanakh, especially Torah, plays a significant part in our Catholic life. We are fully Catholic, and like the original Jewish Christians, living our life in the light of Christ is quite centered on the Old Testament as well as embracing the New.–Acts 21.
The Old Testament is very important to Catholic life. It gets covered, reviewed, and studied as much as the effort you are capable to put into it. If you are not getting a balanced coverage of both parts of Scripture in your Catholic way of life, why not explore other ways which the Church already has in place?