This event happens four times a year, so if you can't make it tomorrow, mark your calendars for 2018: March 8, June 7, September 6, and December 6.
Click here for Pitch War's list of hashtags for your genre and the rules. Remember: Don't "favorite" friends' tweets. If you want to show your support, you can RT and Quote-RT.
Here's a Writer's Digest piece by #pitmad founder Brenda Drake about the history of the event. And this link on her site is all about past successes.
Speaking of Twitter, after a big 2017 hiatus, I'm venturing back. Find me!