Only an expert with significant crevasse rescue experience should attempt glacier self-rescue with a two-man team.
A team of three or four GREATLY increases your safety margin.
As far as book learning goes, FOTH is good, but 90% of the book is unrelated to crevasse rescue.
I've read a few, and my favorite, by far, is "Glacier Mountaineering: An Illustrated Guide to Glacier Travel and Crevasse Rescue" by Andy Tyson illustrated by the master himself, Mike Clelland(!). For complicated systems like 7-1 raising systems, by mind works better with illustrations and that book has the clearest ones, by a long shot.
But for god's sake, get professional instruction by a registered mountain guide on an actual glacier FIRST.