A family friend just gave me his stash of film, as he's switched to digital. All of it is expired, but has been in freezer storage for its whole life. I have read that I should try cross-processing the expired slide film. Is this a waste? Are there any general tips for shooting expired film? I would assume that it is now probably slower than its box rating, is this something I should try to compensate for? Here's a hastily constructed spreadsheet of what I've got. I was typing as I went through the box, so it isn't well organized.