All sites are pretty much the same.
Vertical lines are for lining up center
horizontal for wing level
Center dots/crosses = pipper for aiming guns
the first mark below the pipper (closest) is usually for rocket aiming
the lowest marker below the pipper for bombing
Circles are used for judging range
So most sites are pretty easy to figure out how to use.
x2 - I'm looking specifically for the "death dot" that Grizz and others used in AoM. I can't find my file for it, and I'm returning shortly and need it as I've been using it for years, and I'm too old to adjust to a new one, heh.
In the default load of sites the "ukTp1MKIII" is a single red dot, and the "usaK14crs" is a sing plus sign. either should work for you.