We know have access to Piazza in Canvas! Piazza is a great way to manage student questions, especially considering that it supports automatic code formatting.
To access, log into Canvas and click the "Piazza" button on the side. You will be asked to link/create a Piazza account (free) and from there you will be able to post questions. You can even post "private" questions to me and the teacher assistant.
I really think this will be a great resource, especially as everyone is learning R for the first time.