What are some good resources to learn the Factor programming language?
I understand that Factor is based on Forth, so I guess resources on Forth would be nice too.
Begin with these two (old but great) books by Leo Brodie:
Both books are available free on the web:
Also check out www.forth.com
The Factor implementation and runtime itself is also a good resource to learn factor:
The listener allows you to explore, walk, and modify almost everything. Moreover the documentation is completely embedded in the runtime, with sample tutorials to get started with.