beginner needs information about Progress 4GL

Hello All,

I am new in the Progress 4GL world. I don't know realy which programms I need for developing Applications based on Progress 4GL and from where can I obtain those programms/development-kits?

My rough knowledge profile is as follow:

- SQL (MS-SQL, MySQL, IBM-AS400,SAP DB2, Oracle)

- Visual Basic

- PHP

- JavaScript

- JScript

- HTML

- XML

Can you give me some startup information/links for "Delvelpment Kit" to learn Progress 4GL?

Thanks in advance

greeting

Otto