Here's the vignette that leads us from the last episode of the original series to this continuation:
Here's the first episode, which is a direct sequel to The Original Series episode Who Mourns for Adonais? starring the same man who played Adonis in the original:
That episode has a Wikipedia entry here. I'm loving this.
The second episode, which guest stars Lou Ferrigno, is here:
More are expected.
Slate has a positive review. io9 has given it some positive attention.