In the FunBridge app, one can see what different bids mean, and what a given bid can mean in a given position, by clicking on the bid. Note that the exact setup might depend on options in the app. There are also other modes in the app.
The system we teach in the course now has most in common with the 2/1 system in the app. There might be some details that are slightly different.
All registered junior players in Norway can get a free subscription to FunBridge. See juniorbridge.no for more info and registration (Norwegian only). Also check out the FunBridge website for more info.