What does "open" mean here?

Native speaker’s answer
Rebecca
This isn't really a conventional usage of "open," but the speaker uses it here to indicate his openness or willingness to be used or to take instruction. You can think of the meaning of the adjective of "open," which means to be accessible, not closed, or unimpeded, and that should give you an idea of what the speaker is trying to say. Ex: The store is open for business from morning to night. Ex: Ask me anything. I'm an open book. => Open to answering any questions