I'm afraid I can't offer much help with primary source material, I'm usually quite happy with secondary sources.
Such as:
H.E. Mayer's "The Crusades"; S. Runciman's "A History of the Crusades" and David Edge and John Miles Paddock's "Arms & Armor of the Medieval Knight"(This one is pricey though, you might want to try abebooks.com for it).