I can give a few links about Knime and R. I would suggest you start with the installation and then use your question here and then move on. For python and KNIME I also have a few links. But my impression is the setup with KNIME is not so straightforward. I might have a second installment about that.
Installation of R
Video tutorial KNIME and R
Basic usage of R and KNIME
The collection of R nodes
(Below every description there are links to sample workflows)
