Here are links to some communication resources that may be helpful for you, sorted by topic area:

Grammar

Apoplectic Apostrophes – a blog by editor Suzanne Purkis, who writes creatively about grammar topics.

Grammar Girl – Grammar Girl answers grammar questions in a thoughtful and fun way.

Grammar Girl’s Editing Checklist

Grammar Girl’s Quick and Dirty Tips for Better Writing by Mignon Fogarty

Grammar Grater – A series of short podcasts by Minnesota Public Radio, featuring Luke Taylor and the Grammatis Personae Players™.

Purdue Online Writing Lab – A great grammar resource from Purdue University.

Writing

Beginnings, Middles, and Ends by Nancy Kress – A great guide on dealing with the most troublesome parts of a story.

On Writing Well by William Zinsser – Focused on non-fiction, but applicable to everyone.

Story Engineering by Larry Brooks – A useful resource describing how all the parts of a story should fit together.

Speaking

The Phone Lady – A fantastic blog about telephone speaking skills.

Public Words – A blog that provides tips on public speaking.

 

Please feel free to add your own favourite resources in the comments below.