I have added some instructions on how it is going to work next weekend. If you have time through the week, please familiarize yourself with the process.
If you have any questions or anything is unclear, let me know so I can clarify or add additional information, here and in the following (can't post there but let me know here or via a message):
https://www.chess.com/clubs/forum/view/january-23rd-pairings-and-process
Is this chess.com blitz or chess.com standard for rating purposes? What about USCF ratings for this event? What section(s) do I qualify for?
On your first question, it doesn't matter as the challenges have to be made manually, requiring the games here to be unrated.
For USCF, it is rated Online Quick. Your section will depend on your rating based on the list given on the first post. I'm pretty sure you have an Online Quick so that rating will be used.
Is there a roster on who is signed up for what section yet?
I have a USCF provisional rating, will you be using that, or will I be placed based on my Chess.com rating?
If you have any USCF rating, I'll use that. Which rating I use will be in the order listed in the first post. I will use the most recent one, whether published or not, including provisional ones.