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This is the top-level Help page for JMRI.
The acknowledgements page shows that a lot of people have been able to contribute.
If you're viewing this via the JMRI Help menu, the section to the left is a table of contents. Clicking on an entry will load the help page in the right section.
In JMRI, selecting Preferences ⇒ Help provides three options.
The main JMRI web page, https://jmri.org, is a good place to
start for information about current status, updates, etc.
(Depending on your computer, you might have to copy that link to your web browser to be able to see external sites properly).
We have a Groups.io discussion area, JMRI Users. This group is the place to discuss any aspect of JMRI. If you have questions about how to do things, suggestions or even complaints, post them there. You can subscribe, browse posts, etc. at https://groups.io/g/jmriusers/.
Our technical web pages are continually being updated. We're always short of documentation, so if you're interested in working with the code or updating some Help files, we'd love to help you get started.