Easiest way to do it is go to blackberry.com on your computer, click on the present at the bottom left of the page saying "thank you gift," click on the "browse and download applications" on the right side, and it will take you to the page where the free applications are listed.
Now right now, as of 6:34 PM EST, there are two apps available. We were all promised 12 listing over $100 worth. I'm raising a stink about this crap because once again, BlackBerry didn't deliver what they promised.