oh I don't remember when I started to use internet but I remember I used a 33kb modem for it loool. We are from old school, aren't we? :D

Even without internet, nowaday you can find books for kids which explain to them in an adecuate language about all the changes of the puberty, and treat about sexual topics. Maybe it is better for them because if they research on internet they will get more information than they really need for their age I think.