Please list Jobs that are available but require only a small amount of training above entry level (real estate, medical)

[jonbenson]

Please list Jobs that are available but require only a small amount of training above entry level, By small amount I mean from a couple of weeks to 6 months

example:
medical assistant
security guard

[krawhitham]

Emergency Medical Technician - Basic.
Bus Driver
Sterilization technician (medical)

Just a few.

[DaBurgh]

Cook
Bookkeeper
Bartender
Real Estate Agent (this one takes time and testing I think)

[JimRom]

Welding
HVAC repair
Truck driving
Entry level IT - A+ certification can be done fairly quickly if you're coming into it with prior knowledge