First we'll start with a graphic novel/comic guide. I've said before I'm fairly new to this genre and anything that helps find new things to read or gives a correct reading order once you find something is great. DCE has released the DC Entertainment Essential Graphic Novels and Chronology 2014. You can get a free e-copy either from their website (here) or a kindle copy (here). There's also a 2013 one but I have not looked at that one yet.
Mockingjay Teaser Trailer
Guardians of the Galaxy trailer