I've been into Game of Thrones. Hard. Since episode one.
If you're used to a lot of action, it's very possible the first two episodes of this final season have been a bit of a let-down.
In the interest of staying away from spoilers...I found this guy...who spends A LOT of time breaking down details you may have missed in Episode 1.
And I still cannot look at Arya the same way after last night ;)