I've had my Utah instructor license for 6 years. I had to go to Utah to attend their instructor class. I believe that requirement to be the same. https://bci.utah.gov/wp-content/uploads/sites/15/2021/10/CFinstructor_new.pdf
OC area
In this neck of the woods, Larry (Trading Post) is good, Arthurs Shooting Supply is good, as well as Lighthouse Guns in Selbyville. If you buy a gun at Lighthouse, they will personally take your purchase to Bob Arthur for a transfer. Lighthouse has a ton of guns in stock AND AMMO.
tj
New Indoor range
The new indoor range is called "Range Time". They are on the web and Facebook. They are located on the MD/DE Line, just north of Willards/Pittsville Area.
tj
Arthur's Shooting supply on the outskirts of Berlin, Larry's Trading Post in West OC and Guns-R-US just north of Ocean Pines. Lighthouse Guns in Selbyville is very good too, but Gus is still in Florida so they are closed, plus, Marylander's will get a ticket if you get caught in DE.lol
tj
New State of the art indoor range opening in Delaware in Feb 2020. Literally located on the MD/DE border in southern DE.
http://range-time.com/?fbclid=IwAR36lnNIwgkI5B05vGye4EF8vTT_VG-uLA3NYfyem58sRaKoh-fHq4Deems