I've been experimenting with Krita for quite some time now, and familiar with the interface.

Veterans out there, can you suggest a method to test my newly bought Wacom Airbrush ?

Try using the 'tangential pressure' sensor in the brush settings(f5) for size, opacity or flow. This sensor is linked to the wheel on your airbrush.

TheraHedwig wrote:Try using the 'tangential pressure' sensor in the brush settings(f5) for size, opacity or flow. This sensor is linked to the wheel on your airbrush.

Which brush do I use and how do I do it?

I have been trying hard to see some tangible change when I use the wheel on my airbrush, not to much avail

Is there some kind of test I can do to check if the wheel actually works on my Airbrush?

I am afraid if its dead so that I can request a new airbrush in case this one is DOA.

The Wacom utility hasn't got anything for you to test with?

I am pretty sure that tangential pressure works. (Try Airbrush_pressure, go to the settings, turn off the 'enable tablet settings' on the opacity. Set the flow to 100%. Turn on the enable tablet settings, turn off 'pressure', turn on 'tangential pressure'(lowest sensor).)

TheraHedwig wrote:The Wacom utility hasn't got anything for you to test with?

I am pretty sure that tangential pressure works. (Try Airbrush_pressure, go to the settings, turn off the 'enable tablet settings' on the opacity. Set the flow to 100%. Turn on the enable tablet settings, turn off 'pressure', turn on 'tangential pressure'(lowest sensor).)

Thank you !

Indeed its a very subtle effect the wheel works as expected. Only when I operate the wheel do I see the color painted on the canvas.

I am new to using the airbrush, could you suggest some resources to learn the context where I can exploit the utility of the airbrush for Krita ?

Krita doesnt come with a brush that makes use of the Airbrush wheel so you have to modify existing ones.
Familiarise yourself with the brushes and try out which setting you like to use the wheel for, then map it to Tangential Pressure.
In the end its just a stylus with a wheel, dont restrict yourself with using it only as a Airbrush.