Just starting to watch. Starz subscription via Amazon made it available to view sometime overnight. I will spoiler tag some thoughts, but for those who have read the books shouldn't have any surprises. Note: it does begin with Culloden and being Starz it's pretty bloody. Eat first or afterwards.
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It begins after the battle, with Jamie regaining consciousness and flashing back to the battle. The scene where he meets up again with Black Jack, while bloody was really good. I'm not sure what the film technique is called, but they shone the sun in on those two while the battle went on in the background.
Note, the Starz subscription through Amazon is $9.95/month and can be canceled and restarted at any time. Watch from PC, laptop, etc.