baby oil works good.
No why would you in the first place ewwwwwwwwww Actually.. its perfectly normal... Try sitting with your legs open looking into a mirror or use oils and creams, you can also get a better urge by humping a pillow. ;)
Use beauty creams and do workouts.
finger
Well you could, but you finger your vagina.
Yes! False nails are sharp and you will cut the skin of your vagina so don't finger yourself.
No
finger yourself
girl- fist/finger yourself
Ten
It will come naturally if you are turned on enough. Relax and enjoy.
yes put your finger in your rectum and twirl
having period has nothing to do wit masturbation.So you can finger your self as usual if you havent had your period.