I have already pointed out that Frostbitten by Mark Walton is out very soon. It's actually waiting to be read by you now. And a portion of proceeds goes to the Terence Higgins trust to help AIDS victims. I have reviewed it already here below in this blog.
It's an excellent book, well worth reading, and has its own website here. Order at this link, where, including postage, it's only $10 including postage to wherever.