This looks like it was a fun project. I like that you have multiple contributors.
Personally, I think you've got a little too much focus on similar blades without going over other options at all. I also think you've got a very slim selection of information on firearms, and the showing off of a neat looking practice gun seems out of place.
Would love to see data about practical bug-in defense (home fortification, noise and light discipline).
Would love to see data about likely zombie physiology and capabilities.
Would love to see data about bug in location choices (pro/con for urban, suburban, rural).
Would love to see more general prepper/survival tactics for water filtration and basic shelter and shelter enhancements.
Would love to see data about blunt weapons.
Would love to see a pro/con breakdown for the most likely go to weapons people talk a about.
Would love to see more categories covered from the zombie survival guide or the zombie combat manual.
I look forward to seeing more from you guys!