I got issue one, but have only flicked through it so far. The crossover doesn't particularly grab me and starting a new series with the second chapter of another story seems wrong to me.
The Continuum book covers all the main plot points broadly, and gets some a little wrong, but is a good cheat sheet if you're going to skip those comics. The Windblade miniseries takes place after the Dark Cybertron crossover. The ongoing Windblade series occurs now in the Combiner Wars crossover.