On the front page, it says &quot;The content presented here is suitable for self-study by those wishing to learn Python for astronomy or other scientific research applications.&quot;<p>Right below that, it says &quot;The workshop material here was presented in the Spring of 2011 at the Harvard &#x2F; Smithsonian Center for Astrophysics. A range of about 25 to 50 people participated in the different workshops, which were 1.5 hours in duration. Based on our experience a 2 hour slot would have been more reasonable to allow time for the exercises and discussion.&quot;<p>It sounds like this was a series of workshops that were presented, and the material collected and released as reference for anybody else who wants to take initiative in their own communities.<p>This brings up a good question, though. What are the reasonable expectations for people who make their reference materials online after they&#x27;re done with the initial conference talk or workshop, and have moved on to something else?