AS400 for Beginners: How to Start Learning IBM i
A starting plan for beginners who need to understand AS400 screens, core concepts, daily tasks, and where modern IBM i tools fit.
Learn the words and surfaces first
Beginners should first understand the platform names, IBM i, AS/400, iSeries, System i, and the difference between the operating environment and the business applications running on it. They should also recognize the user surfaces they will encounter, from 5250 green-screen sessions to browser interfaces and modern integration tools.
That vocabulary removes a lot of early confusion.
Practice one real business workflow
The best beginner training does not start with every command the system can run. It starts with one workflow the learner can follow end to end ... looking up an order, checking inventory, validating a job status, or tracing a report.
Role-based practice makes the platform understandable much faster than abstract study.
Add modern tools once the basics make sense
Once beginners understand the underlying process, they can better appreciate where modern tools help ... APIs, dashboards, workflow automation, reporting layers, and modernized interfaces. That sequence matters because modern tooling is easiest to understand when the original business process is already clear.