How to get the most out of a conference
Be present, read the room, and respond to what you hear and observe—not what you already know or assume.
Ask questions (related to the above). Think of how you would change your question to produce a more interesting answer, for yourself, the audience, and the speaker. Repeat.
Over time learn to ask better questions.
Be gracious and grateful for the time and stories people share with you. Acknowledge and recognize their contribution to your experience.
Put in the effort to make others comfortable and in turn they will make your experience much more fulfilling.