Find the documentation you need.
Different tutorials are available on Eclipsepedia.
If you are new to Eclipse Scout, you should consider the Hello World tutorial. In a couple of minutes, you will create a very simple application step by step.
Videos show you step by step how to use Eclipse Scout.
All screencasts are listed on this page
Presentation material of the conferences on Eclipse Scout are listed on this page
Documentation can be found here: Scout page on Eclipsepedia