A couple of questions regarding the common app

hello,
so my first questions is regarding the additional information section. should I write in a literary manner(like I’m typing an essay) or should I just throw in what I wanna say? I just wanna highlight that I don’t have any ap’s on my app because my school doesn’t offer them, that I haven’t taken as many subject tests because of financial circumstances, that’s all.

the second question is regarding the " other schools" section. you see, I’ve traveled alot throughout my life and I’ve been to many different schools, certainly don’t remember names and exact entry and leaving dates, what should I do?

You don’t need to add that info in the “additional information” section. The adcoms will know everything about your high school by reading the school report that is sent by your GC. This section is not the place to put this kind of information.