The PowerPoint Apologist, Apologetics 315 is offering a series of 12 Free PowerPoint presentations, released monthly. These cover 12 essential topics in apologetics. These are free to download, modify, and use for your own apologetics presentations. (However, please retain the final two slides featuring the PowerPoint Apologist and Apologetics 315 resources.)
The first presentation is "Why Apologetics?"
Download it here. Slideshare link here.