dd first started getting noticeable "armpit stink" shortly after her 8th birthday. I was expecting the boys to get theirs a bit later, but ds1 just turned 8 mid-April and now he's got "armpit stink." Noticeable enough that when you hug/cuddle/etc or he's jumping around in front of you, you get the waft.
Is this an indicator of puberty? Is it younger than average? I hadn't done a ton of reading about the intimacies of boys' puberty yet, but I'm wondering if this is the sign I should start preparing. I've mentioned the overviews to him, including ejaculation, before, but when I brought it up again last night he'd forgotten about it (hair growth, ejaculation, and so forth).
Good links/resources for parents to read about the intricacies and ranges of boys' puberty?
Also, good books for boys? I got DD the American Girl book when she was about 8; somehow I thought it would be irrelevant for another year or two at least with my boys, but wondering if I'm just blatantly misinformed?