This site is a handy primer with everything you need to know to start reading and writing Nsync fanfiction https://www.squidge.org/~theforest/owlet/nsync.html

Another popslash primer, focusing on both Nsync and Backstreet Boys https://web.archive.org/web/20030402200553/http://www.popslash.com/primer/index.html

coming soon

coming soon