Hopefully everyone who ever writes anything on the Internet about this refers to it as "Azure functions", which will make it possible to find information. This seems unlikely however.
Microsoft would have helped out everyone-with-a-question by giving it a slightly more distinctive name to search by, such as PureFunctions or something.
Search Bing for:
"problem with functions"
"functions won't initialize"
"how to write functions with functions"
"what sort of language can I use functions with"
"getting started with functions"
"error with functions"
"how to write lambda functions with functions"
"my functions function is not functioning"
The pain begins instantly.