My Favorite Book

So I started puberty  at the age of 10 and my parents gave me the talk and such, but otherwise it was a typical boy going through puberty . But they decided that at 14, they'd give me a book on what the changes were  in the body, for both male and females! My mind immediately went to the thought of looking at the girl section and using it to jerk off. I immediately flipped to the beginning of the female section, about half way through, and started reading. I got to the section about breast development and started to get hard. Looking at the diagrams of how boobs were developed  made me very excited . As i continued reading, I got to the section on vaginal  development.  I started stroking slowly as I read and  looked at the vagina going from child like into a woman. Finally, i reached a diagram  of every stage of the female body shown on actual hand drawn models. I started jerking off faster and came in minutes. This book didnt leave my bedside bookcase for years,  providing me with many loads of cum.