One year we used a PowerPoint presentation for our Bible introduction and the Old testament. You can download the PowerPoint presentation from our website here Bible-OT. If you do not have PowerPoint, you can use PowerPoint online to play this presentation.
There is a really good audio file on the St. Paul Center website that takes about the mass in the early church and its link to the early martyrs. It is about 40 minutes long and is presented by Mike Aquilina. Goto The Martyr’s Cup: The Roman Martyrs and Their Mass
Is there a God?
There are many arguments that demonstrate that God exists. In his book Handbook of Catholic Apologetics he writes about 20 different arguments. A sample is at www.peterkreeft.com/topics-more/20_arguments-gods-existence.htm He also has a very good audio presentation of 5 of these arguments. You can listen to it