Is it against rules to share notes

Is it ok to give out my notes that I took while reading the CFAI curriculum to colleagues?

What if I copied some text from the books on the notes? That would mean I would have to reference the CFA text?

If they’re your own notes, you certainly can give them away.

If you copied verbatim from the curriculum, I’d suggest e-mailing CFA Institute (info@cfainstitute.org) and asking them.