Short, sweet, and to the point. The lovely folks at GetResponse, an email-marketing company, share the perennial calendar of marketing and advertising. What buttons work best and when: this works for ALL forms of marketing, and is worth a share. Get an idea of what topics trend well when. This works pretty much every year, across all platforms, with minor adjustments for movable holidays (e.g. Easter, Thanksgiving, etc).
Certainly, it doesn't cover ALL the basics, but it's a great start!
