Official Documentation for IBM i 7.5, where you can find information about how to install, maintain, and use the IBM i. 7.5 is the current release, delivered in 2022.
This IBM Redbook includes several of the announced features for SQL procedures, triggers, and functions in IBM i versions 6.1, 7.1, and 7.2.
This IBM i Redbook covers external stored procedures and triggers, external UDFs, Java procedures, and more.
This IBM web site has information about RPG enhancements and other RPG-related topics.
Navigator for i – new version – provides a comprehensive set of system management features for IBM i.