The Book Basilisks discussion

Hi everyone! I was wondering if you know any fun reading challenges, I have been looking around on the internet but I can't find much...
Thank you :)

Oh yeah, that's what I mean :) To be honest, I don't know what a book tag is? Could you explain?

There are also a lot of challenge groups in Goodreads! Two groups I'm in are Monthly Challenges and One Million Pages Per Lifetime.