Look up old fansites from 2002 (like SuperHeroHype or old Spider-Man fansites from Geocities) and plug those specific URLs into the Wayback Machine to see how fans reacted to casting news and set leaks in real time.
Here is a comprehensive look at how the Internet Archive preserves the legacy of the 2002 Spider-Man film, and what treasures you can find within its vaults. The Evolution of Movie Marketing: The Original 2002 Website spider man 2002 internet archive
These were B-roll footage and interviews sent to news stations in 2002. They offer raw, unedited glimpses of Tobey Maguire, Willem Dafoe, and Kirsten Dunst on set. Look up old fansites from 2002 (like SuperHeroHype
Perhaps the most famous piece of lost media associated with the film is the original teaser trailer. The Content: unedited glimpses of Tobey Maguire