The "have you ever been to a carbine class" in GD said some community colleges have inexpensive classes taught by local Sheriff's offices.

Truth?
Helpful links for Colorado?

Sorry I do not know about CO, but in AZ we do.

main link
http://www2.gccaz.edu/academics/departments/public-safety-science/LEO/civilian-firearms-training

class link
http://classes.sis.maricopa.edu/index.php?keywords=ajs140AA&subject_code=any&all_classes=false&terms%5B%5D=4144&terms%5B%5D=4146&institutions%5B%5D=GCC02&credit_career=B&credits%5Bmin%5D=gt0&credits%5Bmax%5D=lte9&start_hour=any&end_hour=any&startafter=&instructors=

These are some of the best bang for the buck entry-into-training type classes available.