These notes are on a second-semester grad topics course. During the semester I'm updating them twice a week with new lectures, and I encourage everyone (students of the class, friends, colleagues, strangers) to suggest changes! You can do this by submitting a pull request or by emailing me at brazelton@math.harvard.edu.
Aside from eternal glory and my undying gratitude, I will owe you a coffee or beer at the next conference we attend together, and I will add your name to the acknowledgements
Anything from completely rewriting a proof I have, adding a new example you found, or just fixing a typo or adding a missing period! No suggestion is too small. This is how the Stacks Project operates 😃
What if I don't have a suggested change, but I have a question about something that's confusing in the notes?
You'll see that Issues tab at the top of the page. Just open a new issue and describe your question, and I'll try to change the notes to address it!