RPG IV books for a Ruby programmer?

Question

I am a Ruby programmer and need to learn RPG IV because of my current project. I want to study primitive types, data structures, control flows, architecture, etc. Online resources are as good as paper books.

What book or online tutorial should I start with?

Answer 1

This IBM Red Book is still relevant today.

The IBM i Information Center is a source of factual documentation.

RPG-L is a great mailing list where hundreds of helpful people answer all your questions.

Another link I knew was there, but at first I could not find from Scott Clement , who is well known in the IBM i community.

Answer 2

You can run JRuby natively on iSeries if this is your core skill set.

It may happen that you have some clumsy gray bots that are afraid of new technology stacks.