A team working on developing a short handbook for professors about how to manage TAs – this being, like so many other teaching-related matters, something we have little training and guidance in – asked me to come up with a few comments to start of the process. Below the fold are the initial thoughts which, with your help, I can revise to provide them with a starting point. Please comment away as you see fit – most of you have either managed, or been, or had, TAs, and have some sort of insight into what goes well and what goes badly, and what might be good advice for the professors who supervise them.