IGD Academy

These courses are basic introductory courses for gas detection and are free.

https://igd-academy.thinkific.com/courses/flammable-gas-detection-basics 

https://igd-academy.thinkific.com/courses/toxic-gas-detection-oxygen-depletion-basics 

https://igd-academy.thinkific.com/courses/bump-testing-your-gas-detection-system