Held recently a presentation on Spring at TietoEnator and NetCom. It was a brief introduction to the Spring Framework and the IOC, MVC, JDBC, Hibernate, Acegi modules.
It was the same presentation , but the first one dragged on for 1.5 hours. At which point the audience was getting quite bored. The second wizzed past in 30 minutes. This time the audience probably did not catch a lot of what I said.
It is definetly not easy. Both times the projectors played up and caused a lot of grief. The first presentation included way too many examples. The second not enough.
If curious, the presentation is here, and all the examples are here.