Recently the American Alpine Institute has posted tips for building anchors for ice climbing. These tips aren't ground-breaking new information, just good, safe technique. I find any information on anchor building to be helpful, either as a review or for learning the first time. When I first started trad- and ice climbing, I was constantly reading books and articles about building anchors.
Anyway, I thought these were helpful posts, so I thought I'd pass them on.
Part 1: http://alpineinstitute.blogspot.com/2012/06/ice-anchors-part-1.html
Part 2: http://alpineinstitute.blogspot.com/2012/06/ice-anchors-part-2.html