(If you are new to MCU, then you should start with; Iron Man, The Incredible Hulk,
Iron Man 2, Thor, Captain America and then Agent Carter.)
Stark Expo 1974 - commercial for Stark Expo 1974 in Flushing Meadows in New York.
There are four different Stark Expo 2010 videos:
They take place during Iron Man 2 and you can easily find them by googling for them.
S.H.I.E.L.D spin-off mini-series Slingshot can be found at ABC's youtube channel.
S.H.I.E.L.D will be back in July 2019. (And it will probably be the last season)
Marvel Cinematic Universe (#1-4) tie-in comics :
Arrowverse viewing order:
This is the simplified list for easy viewing order for Arrowverse!
Webisodes (you can find most of these videos at YouTube or at CWtv website):
Constantine has a cameo in Arrow S4E05. I do recommend you to watch this series, but there's no must. But he might get back into the Arrowverse one day. (and I also would recommend to watch it in this order: 1, 6, 2-5, 7-13. Episode 6 was shot to air as the second episode of the series)
I have added Supergirl Season 1 before the crossover episode to the list. You can watch it basically whenever you want, as long as you watch it before Flash S2E18 or after Flash S2E18 (I personally prefer to watch it before Flash episode, but both ways work). Also S1E04 and S1E05 were aired ouut of original order. Episode 5 should be viewed before episode 4
Constantine: City of Demons: So it appears that Constantine: City of Demons is not a continuation of the Constantine series and so it is not included in Arrowverse. Instead it's in the same universe as Justice League Dark (so it's in DC Animated Universe). But for now I'm going to leave it in the list, as it still explains things like "Newcastle" and etc. But they may get connected, as Constantine will becomes a regular on DC: Legends next season. So we will wait and see.
Crossover event: Elseworlds (The Flash, Arrow & Supergirl) December 9 -10th. This crossover will introduce Batwoman, Lois Lane, and Gotham City and also Superman (with black suit!) will be part of the crossover. DC's Legends of Tomorrow won't sadly be part of the crossover, but they will have a crossover with their own show instead.
Batwoman - played by Ruby Rose (2019-2020)
Comic books that also follow the series: