First, you have to consistently provide valuable insights, answer questions, and participate in discussions, in order to potentially establish yourself as a thought leader within the community. As such, when relevant to the conversation, you can include a link back to your website, directing users to in-depth content or resources that expand on the topic at hand.
This response to the question "How can you learn faster?" on Quora exemplifies how you can attach a website link to an informative conversation to provide further clarification on a subject matter.