Announcements can be golden. NXS beautiful example. Announcement was not what holders were expecting or wanted. Stock had been in suspension during a bull run and many traders caught by this just wanted out so they could invest elsewhere. Learn to use the "herd" mentality to your advantage.
Good luck. Soak up the knowledge from the pro's on this thread like a sponge. Learn from your mistakes. Write them down and constantly update your plan as you learn.