I've posted several articles of my own devising on my editing web site, www.lauragoodin.com/editing (the link to the articles is near the bottom of the page). They are designed to give relative beginners at scholarly research and writing a few starter tips. I've run them past a university professor of my acquaintance who has suffered for years at the hands of good-hearted but woefully unprepared undergrads, and he reckons they (the articles, that is) can be useful for someone wanting to raise the level of their writing.
I'll be adding more articles over the next few months, so if you have any ideas for topics that might help you or your students, please feel free to suggest them! Also, I'd appreciate your sharing the link to the articles to anyone you know who might benefit from them.