Once you’ve understood what a survey involves, sign up to the Where? Where? Wedgie! web app or app, and book a 4 km x 4 km square on the map, to survey on one or more of the official dates (Friday–Sunday 13–15 & 27–29 May 2022). You can also view the squares without signing up, via the Results Map, but read the instructions before before choosing your square.
Bookings open early in the year (announced by email and in social media), and close a few days before each survey weekend to allow for preparation time. Book as early as possible to help everyone coordinate, and to get your preferred square before anyone else does!
Tips on using the web app and app are in the instructions and this video.