What do I do?

find videos how to shave everything. SHAVE YOUR PRIVATES TOO ALWAYS

You don't need to learn to shave your legs. It is pretty simple. Go slow, and watch what you are doing. My suggestion would be to go buy a shaver and use it. Shave what you want, and keep the hair where you want.

If you have sensitive skin, use shaving cream, or shave in the shower or bath. I have to shave in the bath or shower, or else I get a rash.

I have hairy legs, and I hated them when I was 11-12 years old. Shaving was a must, with my dark thick coarse hair and light skin.

I had the same problem.
Listen, you sneak into your mother's bathroom and take her razor.
Put some water in a pot and heat it, you can use a microwave or stove.
Let the water boil and pour more water from the faucet (not hot water) until the water is not so hot but still very warm.
This is the water you will use for your legs. Go to the bathtub and pour the warm water on your legs, and rub any type of humectating soap on your legs, if you have a wash cloth or a loofah even better... Then simply shave.
Shave upwards and softly, the razor will get fill with hair, wash it with plain water. The After you are done. Pour cold water on your legs and if you have any type of lotion or humectating cream use it. If it start getting itchy DO NOT scratch it will go away.
Make sure your mama is not home. If she sees someday that you have shaved explain to her how it makes you feel insecure and uncomfortable, she probably understand and if she don't, keep shaving behind her back.

Every woman deals with hair problem. If this is getting in the way of your school work or social life, you should open up to a councilor at school and ask him/her to gently talk to your mom how important it is for you to get this done. You won't have to directly discuss it with your mom and get into trouble, and if you have someone else talk to her for you, an adult no less, she will feel the weight of the issue more heavily than if you said it.