Anyone here familiar with the SPT? (Society of Photo-Technologists International)

I am not a camera shop, or a pro repair tech. I have been considering joining as an associate to gain access to the library. I'm wondering how large the library is, when it comes to service manuals. You can't see what they have until you join. But I am not familiar enough with them to know if I want to join.

I don't envision going pro, I just like to tinker with dead technology.