The first few things that come to mind could each have their own page (okay, lots more pages)...
First page: Horse Handling (catching, safe leading, tying, tools used, etc)
Second page: Horse Nutrition (basics: type of hay would take half the page, grain, supplements, and ration balancers could be general and take up the rest of the page)
Third Page: Basic Health care/First Aid (respiration/temp/etc, farrier, dentist, etc)
Fourth Page: Basic Grooming (tools used, bathing, etc)
Fifth Page: SAFE Enclosures (no barbed wire, pros/cons of different fence types, no nails/scraggly boards hanging out, etc)
Sixth Page: The FUN part - riding/driving/whatever your pleasure may be! (you'll probably go over the page requirement here)