Proposal: Interpersonal Skills
Are questions asking for references allowed? For example: "I want to learn how introvert people successfully improve their interpersonal skills, anyone has reference to a book or a learning site?"
Opinion-based questions like this would usually be found to be off-topic.
But, if this site accepts that there is a learning aspect that would cater to people who want to improve their general skills, a community consensus on its Meta may allow a reference list of sorts. Other than this, you may have to pursue this thread in a chat room perhaps.