The FCC has taken great strides to make the COmission REgistration System (CORES) and the Universal Licensing System (ULS) easy to use and has devoted a section of their website to the Amateur Radio Service.
Helpful web pages include: New Users guide to ULS and Common filing tasks which offers instruction on setting up a user account, registering for a FRN, and filing electronically via the ULS; and the Commission Registration System Video Tutorials page for videos that help guide CORES users through a variety of situations.
For assistance, submit a help request on the FCC’s Support Services page or call FCC at 877-480-3201 (Mon.-Fri. 8 a.m.-6 p.m. ET).
Licensing, Education & Training >> FCC License Info and Forms >> Universal Licensing System >> FCC CORES Registration Instructions