The Scheme community website at https://scheme.org contains additional resources for learning and programming, job and event postings, and Scheme user group information.
A bibliography of Scheme-related research at https://research.scheme.org links to technical papers and theses related to the Scheme language, including both classic papers and recent research.
On-line Scheme discussions are held using IRC (Internet Relay
Chat) on the #scheme channel at https://libera.chat
and on the Usenet discussion group comp.lang.scheme.