I'm looking into Guice + Roboguice (which seems to be the way to go), but I really need to understand Guice semantics first - Guice != Spring and I have a fair

I'm looking into Guice + Roboguice (which seems to be the way to go), but I really need to understand Guice semantics first - Guice != Spring and I have a fair bit of 'unlearning' to do