Another great free resource from Hubspot: “The Internet Marketing Written Style Guide”
Good writing is an indispensable part of your online presence. This guide is a great reference to ensure that you’re publishing content that is well written, persuasive, and trustworthy.
- How to create and implement your style guide
- General style guidelines
- Tips on capitalization, punctuation, attribution, and more
And more help in video format: http://www.youtube.com/watch?v=J1p6jOYo1dg