Crash course
A crash course was a quick instructional class on the basic details of a discipline.

In 2371, Chakotay described Kathryn Janeway's proposed training for ex-Maquis crewmembers of  as a crash course in Starfleet operations, to which she concurred. ()

In 2373, Julian Bashir suggested that if he traded duties with Elim Garak, he would need to be given a crash course in Cardassian field engineering, something the doctor estimated would take five or six weeks. ()

In 2375, Janeway suggested that rather than The Doctor quickly uploading information on exobiology to facilitate his treatment of B'Elanna Torres, which she characterized as a crash course in the field, they could create a holographic consultant for him instead. ()

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Education