Lewis Ganson, himself a card fan expert, teaches his bits and pieces on that subject. Learn everything from how to treat your cards for perfect fanning, one hand fans, giant fans, etc. This was part of the famous Ganson Teach-In series originally published
In 1949 Lewis Ganson published his first work on card fans with Arcas Publications. Later he wrote a series of articles for The Gen. Ultimately Supreme published a revised version which was Fan Finale. You should also check out Card Fans Teach-In.
Most every card man can do a pressure fan and many can do one-handed fans but can you do a circular fan, one that goes around 360 degrees and closes on itself? There are a few methods in circulation. Ricky explains the one developed by Toyozane Sanada.