Inspired by this question.
We get a lot of questions for the following patterns:
I want to get into security / some sub-branch of security. What books or courses should I read / take?
These get closed as off-topic - and rightly so since their answers would quickly get outdated. That said, they are still good questions, and there must be somewhere on the internet where they are welcome. Reddit often gets mentioned, for example, but not being a member of any of the other online security communities, I don't want to naively send these askers off to become a problem there too.
Question: Do you know of any sites that would welcome these kinds of questions that we can use as a standard "off-topic here, but go ask [here] instead?"
Or, put a different way:
What sister sites does Security.SE have that are more liberal about discussing quickly outdated / opinionated topics?