Separately I have listed a bibliography for the writing of Alfred of Wessex, and below is a selection of magazines and websites that are useful as resources for Alfred the Great, Wessex and Anglo-Saxon England more generally.
If you would like to propose others to add, please let me know:
The English Companions is a society that promotes interest in and research into the Anglo-Saxon era (CE 400-1100). Members have access to a magazine, while the website has articles and information about the period and the language of the period.
The society also has a very informative Facebook page: The English Companions’ Anglo-Saxon History, Culture and Language | Facebook
The Dark Ages Society are a re-enactment society, who recreate life in Britain in the time of King Alfred the Great. They re-enact not just battle and skirmishes, but crafts, feasting and entertainment. The Society’s Facebook page is: Dark Ages Society – Historical Re-Enactment | Facebook
Academia.eu publishes papers on a vast array of subjects. Put in your interest in Anglo-Saxon England, etc, to be emailed academic papers on the subject.