To my disappointment (and to all the other novices trying to do the same, I guess) - Wireshark, which was my first option up to several days ago - does a poorer job (the article says it's not wireshark's fault, but windows. Whatever) - because it shows the 802.11 frames as regular ethernet ones - so one cannot even find frame controls in the captured traffic, making it way more difficult for novices to start grasping what are they looking at (I have started from scratch with Wikipedia articles).