Biography by Shaikh Bin Baz (translated):
http://alifta.com/Fatawa/FatawaChapters.aspx?View=Page&PageID=65&PageNo=1&BookID=14
response to a question:
http://alifta.com/Fatawa/FatawaChapters.aspx?View=Page&PageID=589&PageNo=1&BookID=7
refuting misconceptions:
Imam ash-Shawkaanee on Imam Muhammad ibn Abdul Wahhaab:
Also here:
https://sughayyirah.wordpress.com/2012/04/09/the-biography-of-imaam-muhammad-ibn-abdil-wahhaab/