Any Good Sex Education site?

I'm looking for a website that can answer all my questions something like sex,learn and how to manipulate it.

Answers:

Does masturbating make muscles surrounded by your arms shrink? true or myth?

www.yourmom.com

I'm 15 yrs old w/ distinct facial hair, and haven't started shaving, should I start or move it?

This one is pretty good : )

www.teenwire.com

How long should a man end during sex if not persistent long enough what should he do?

www.askmen.com everything you call for to know about anything.

Why should you use a straight cut-throat?

Here are the best ones I know about:

http://talksexwithsue.com/sexindex.html... (also have a bulletin board where you can ask question and receive response from an expert)

http://www.scarleteen.com/ (yes, it's targeted towards teens, but I find it helpful and friendly for anyone looking to know more more or less sex and how to navigate it)

http://www.sexinfo101.com/ (this one's more of a how-to site, giving you tips and hints on the practical aspects of the deed)

http://www.sfsi.org/ (a good San Francisco-based site. They even enjoy a hotline you can call to ask any urgent question!)

There are lots of others out there- just look around. These are some pretty nice ones, though, to start you past its sell-by date.