The course was a half day course, with a maximum of 10 people on each (one per computer). Most of the people who came on the course had not set up an account, though a few had, but these had lain dormant. The delegates (we had full numbers for both courses) had a variety of reasons for attending - the practicalities, how to use the system to promote their library/organisation/themselves, curiosity, incorporating Twitter into other resources such as their websites and the usual catch all of 'everything'. Many of the delegates also said that while they could have set up something for themselves they were hoping that a quick half day introduction would let them hit the ground running, get the 'how to' out of the way quickly and ensure they could get into the more interesting elements of the service.
One thing that particularly struck me about both courses was that people had a very specific idea about what they thought Twitter was - and for most of them it was as a communication medium. There was much interest shown in the search options provided by Twitter itself, but also in the third party search resources that allowed for easy biography searching, creation of lists and so on. The trending topics element of Twitter was a bit of a disaster on the day since fully half of them were related to what you should say before/during/after sex, but this in turn led to interesting discussions on how appropriate the use of the service would be in certain types of organisation.
In my opinion as the trainer the courses worked well. Everyone was able to create accounts, follow people, post tweets and get the basics. They all had a chance to search and use Twitter as a real time news medium (for several people this was an unexpected top use), and one or two also linked their account to their website during the day. Two things were lacking - more time, and the ability to have a person in front of them who could provide a case study of how they/their library used Twitter.
A course isn't for everyone. Some people do prefer to spend time picking things up themselves, playing around, trial by error, or by reading about the subject. Others like to have illustrations, demonstrations and a guiding hand. We're not all the same when it comes to teaching/learning but given that all the delegates enjoyed the session and everyone went away happy and confident about using the service I think the course was justified.