You will find many examples of scripts, graphics, and general SCADA information. You can use this site to find examples to work on that will keep your SCADA skills sharp after you've been through training.
Scripting
Here, you can learn the basics of scripting as well as find exercises you can work through to keep your scripting skills sharp.
Graphics
Here, you can learn the basics of making graphics as well as find exercises you can work through to keep your graphics skills sharp.
Safety Deposit Box
Here, you will find many good things to know like tech notes, links to handy information, etc.