I wanted to put a bunch of ACM formatting resources in one place for you. As we write the paper, these might be helpful! If you find other helpful resources add them to the comments!
Templates, Formatting, and Writing Guides
ACM digital library (Connect on campus or VPN in for access)
Top HCI Venues according to Google (blog post by Dr. Lana Yarosh with some useful HCI venues)
Google Books is also extremely helpful when looking for book chapters. I’d also suggest talking to lots of people about your topic. Inevitably, someone will know of related papers that you have yet to stumble across.
Citation Management Software
This page has a list of criteria for choosing your software as well as a large list of links to different products