For Every Teenaged Boy on This Site....?

Yes, your penis size is normal. If you are under 18, it may grow more. About 6 inches in length, erect, is average.

No, there is nothing you can to to increase your height. It is genetically pre-determined. All you can do is maximize your genetic potential by eating nutritiously and sleeping 8-9 hours per night (you only grow in your sleep)

Yes, you can help your acne. Go to the doctor and ask about doxycycline. Works wonders.

Yes, you are too young to have sex. If you aren't mature enough to go to the drugstore on your own and buy condoms and not be a total goof about it, you are not mature enough for sex.

Yes, someday a girl (or boy, if you're made that way) will like you. In the meantime, practice excellent hygiene read a lot and try new things so you are interesting to others.