A lot of apologetical works rely on a biblical understanding of covenant theology (I'm speaking specifically of men like Bahnsen and Van Til...Van Til is very difficult to understand as it is).

You will certainly find great benefit from monergism.com
You can't go wrong with Sproul when it comes to Predestination.

I recommend listening to sermons as much as you can and immerse yourself in the Word and those who ably exposit it. Arguments get old and often is simply a contest of one-upping others.

If you are able, and haven't already, find a solidly biblical/Reformed church to *join*, not merely attend.