The FCC now requires all license application use a FRN number. 
To register and receive a FRN number, click on link  below.  Then click on Register.

https://apps.fcc.gov/coresWeb/publicHome.do

fill out the form and the Volunteer Exam Coordinator will contact you.

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There is online options for testing and here is a site to help find a test.
https://hamstudy.org/sessions