Elephorm, the company that hosts Hal's Lightroom videos, transitioned to a "freemium" model today. That means all content streams free all the time. If you prefer to download to your local machine or device there is a small fee. Pretty cool. Incredible training at a great price.
Hal's current content on Elephorm is Lightroom 4. With that said, about 98% of the content is directly applicable to Lightroom 5. His new material will be up soonest.