Occasionally, when I watch the news or Dr. Oz, I will see how important it is to watch closely for little signs that can help prevent something big. So, that lead me to create a daily health log. Everyone of us is supposed to fill this out every morning and every night.
I have this in excel, so if you want a copy, email me.
This has really big a big help. The kids fill it out and when they are sick enough to take to the doc, I just grab my little note book and take it along. This way the doc can see what their diet is like, how they have been sleeping and how they felt up to bringing them in!
Update - We still use this (almost) daily, but for other records I found these 2 great websites. It will be a HUGE help in keeping track of my mom and grandmas info - for some odd reason I cant remember every date of every surgery for my 3 kids, hubby, myself AND mom and gma....