There is a lot of good apologetics material out there. Apologetics is not the art of apologizing for Catholic teaching but rather is the science of explaing Catholic Teaching and defending it.
One teaching of the Catholic Church that is often attacked is that of the perpetual virginity of Mary, a teaching that goes back as far as we can remember in Catholic Tradition and Dogma. But Scripture does mention “brothers” of Jesus. What are we to do with all this? The following video answers the question. Pay attention it moves quickly but John Martignoni does a pretty good job of tackling the question in just about a minute.