Recently found myself using irssi on a setup that’s slightly unusual, so I’m recording the information I found useful for posterity.
To switch windows, use
Alt+ number keys for windows 1-10, or
Alt+ top row (
qwertyuiop) for windows 11-20.
Ctrl+nswitches to the previous or next window respectively. It loops around from first to last or vice versa.
revolveis useful, since it compresses consecutive joins/leaves onto a single line. Useful for channels where there’s not a lot of activity.