Mon–Fri, 10:00 a.m. to 5:00 p.m. Pacific
customer.service@paizo.com
Search this Thread:
Magnimar is probably one of the most well known/detailed places in Golarion
so how much information is just enough to get the characters involved w/o becoming information overload
or have you just skipped it/ not added it, and just played the adventure
It's too rich a city to just gloss over. You could take the info from the Pathfinder Wiki and make a little handout for them.
Also, if you have it, the little Magnimar article in Pathfidner AP #2 isn't a hard read either.