Designer Tutorial General topics 1 2 3 4 5 6 7 8 9 Start

You will need about 20 minutes for the tutorial. Then you will be familiar with Designer elements.  

Designer is working in conjunction with GuiXT. So, when you want to modify a screen with Designer you have to start GuiXT before logging on SAP R/3.
Being in the screen you want to modify, you can call Designer within the tool menue from GuiXT
or by the designer icon:

Sap Guixt imaged00 Tutorials Designer 

You will open a new screen you can work on with Designer:

Sap Guixt imaged01 Tutorials Designer

  For each screen you modify Designer will write a script and store it in the directory specified in the guixt.ini file.
Details can be found under Documentation
Sap Guixt start Tutorials Designer

Tutorials Designer