hmm. Not sure about theology in particular, but there are plenty of online Catholic resources. Here are some.
-Institue of Catholic Culture -Lectures on church history from Catholic professor Jim Papandrea. - Here and here are lectures on church history from a professor at Gordon-Conwell Theological Seminary. He's not a Catholic, but he is very good. -Here are William Craig's lectures on his website. Again, not a Catholic. But they are great lectures, and there's nothing stopping you from reading the Catechism with Craig's lectures so that you know when to part company with him. -Yet more - Here and here are lectures from Fr Kenneth Baker on the synoptic Gospels and historical biblical criticism.