Marvel's the Defenders Viewing Order

For those of you wanting to prepare for August 18th's premiere of "The Defenders" on Netflix, here's one humble blogger's suggested viewing (NOTE: I know some fans prefer particular shows over others for various reasons, but I'm recommending that people watch all four series):

1. Daredevil Season One
2. Jessica Jones Season One
3. Daredevil Season Two (stop right after Episode 9, "Seven Minutes in Heaven")
4. Luke Cage Season One (stop right after Episode 3, "Who's Gonna Take the Weight?")
5. Daredevil Season Two (pick up on Episode 10, "The Man in the Box"
6. Luke Cage Season One (pick up on Episode 4, "Step in the Arena")
7. Iron Fist Season One

There's some minor character crossover with Daredevil and Luke Cage, so while switching back and forth may be a little annoying (the tones of each show are different, but not too much) it helps with continuity.

In terms of, "Why watch all four?" I'll answer by the series:

1. Daredevil introduces the titular character, the general tone of the Defender's world, and their future adversary.
2. Jessica Jones introduces the titular character, gives a preview to who Luke Cage is, and gives you a different perspective of what's going on in New York (Hell's Kitchen in particular).
3. Luke Cage fleshes out the titular character, gives some character development into a crossover character, and expands on the criminal elements that plague New York. 
4. Iron Fist introduces the titular character, and not only expands on the Defender's primary adversary, but adds a twist.
5. All four series introduces support characters who who show up in the series in some fashion.

One thing to note is that there isn't that much in terms of "filler." Each series runs a 13-episode season, and even ones that feel like they drag either has a good reveal, a nice cliffhanger or some interesting character development.  And for those who like cool Marvel Easter Eggs, there are plenty to be found (although the majority come from Daredevil and Luke Cage).