The originators of the Alpha Course published a newsletter called Alpha News, which I have seen cited a few times.
Is there a way to track down back copies of Alpha News?
I've found several options. First, a few issues from the various editions are available online at issuu.com; for example:
Individual issues of the periodical can sometimes be found for purchase on online auction sites, such as ebay.com.
And finally, some libraries carry the periodical. WorldCat.org can be helpful in this regard, though not all libraries with the periodical are listed in the same entry. This entry lists the National Library of Scotland and the University of Oxford, while this one lists the University of Cambridge.