There are several webinars coming up that will be offered by Code.org to give tips and pointers regarding the Hour of Code.
Please check out the following if you plan to do an Hour of Code event at your school or community:
Other events may be posted at: Code.org Teacher Community (Events)
But among all else, please make sure that you actually REGISTER FOR THE HOUR OF CODE:
https://hourofcode.com/us/en