Documentation

TCP/IP Implementation in an OS2 Warp Environment This redbook is unique in its detailed coverage of TCP/IP for OS/2 and its implementation in the OS/2 Warp environment. It focuses on how TCP/IP for OS/2 can be used in an environment with various operating system platforms, communications media, and protocol stacks.
TCP/IP Programming for OS/2 - Steven Gutz This book is intended to span the basics of developing TCP/IP applications for the 0S/2 family of operating systems.
Teach yourself REXX in 21 days - William F. Schindler and Esther Schindler This series of 21 lessons is aimed at beginners who want to gain rapid proficiency in REXX. Arranged in an easy-to-follow format, users will become proficient with REXX in just 21 day-to-day lessons and will enjoy programming in the OS/2 environment.
Writing Device Drivers - IBM Developer Connection Articles - Steven J. Mastrianni An introdution for developers interested in writing OS/2 Device Drivers: where to start, the knoweledges and the tools you need. From "IBM Developer Connection".
Writing OS/2 Warp Device Drivers in C - Steven J. Mastrianni The most authoritative text for anyone developing an OS/2 device driver.