Add link to a good vim tutorial?

I've noticed that people getting to grips github are often flummoxed by vim.
Should we include a good vim tutorial in our Github section? Or create our own in _docdis_? http://www.openvim.com/

Review the repository's GitHub section and the existing _docdis_ material, then evaluate the linked OpenVim tutorial. Decide whether to add that link or create project-specific guidance; done means the chosen tutorial is included in the appropriate documentation location and the alternative is no longer ambiguous.

Written by the indexing model from the issue text.