IBM(R) Redbooks(TM) contain technical, know-how, and "how to" information.
AS/400 Programming with VisualAge for RPG
This redbook demonstrates how to use VisualAge for RPG in a Windows 95 or Windows NT(R) client/server environment.
Who Knew You Could Do That with RPG IV? A Sorcerer's Guide to System Access and More
This redbook is focused on RPG IV as a modern application development language. It is written for those iSeries system programmers that are in the cusp between RPG/400 and RPG IV and are looking for hints and tips to make the move forward worth their while.