Congratulations! Social Security Numbers are provided by the Social Security Administration. I have included a link below that should help you with the next step. Best of luck.
I agree with Mr. Bracken. You must visit local Social Security Administration with at least 2 original documents proving your 1) Identity, 2) Work Authorization Immigration status (EAD), 3) Age. Congratulations!
Social Security Administration is your address
NYC EXPERIENCED IMMIGRATION ATTORNEYS www.myattorneyusa.com; email: firstname.lastname@example.org; Phone: (866) 456-8654; Fax: 212-964-0440; Cell: 212-202-0325. The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter.