Getting back into the game

So I've been away from 40k for a little over a decade and looking to get back into playing. I used Army Builder in the past, but it doesn't look like the support structure is the same. How do I download files etc?
Warhammer 40,000 files for Army Builder
http://ab40k.org/
Spack wrote:If you have an active Army Builder subscription then you can download the latest file from the automatic updates system inside Army Builder. If not, then you can download from the Downloads section manually on the Army Builder website. New files are no longer released here on AB40k.