
Kerrigan build order: Don't open with a hatch at rocks, even if you see others doing it, even if sc2coop recommends it
https://youtu.be/eEra9-wAJhQ (Kerrigan build order (early queen) - part 1)
https://youtu.be/ZYEoeVeq8rA (Kerrigan build order (early queen) - part 2)
https://youtu.be/_8Ha4rFhhRg (why hatch at rocks is inferior: an analysis; tldr: it's at best equal to early queen opening)
https://www.youtube.com/watch?v=b0tC84wu6S0 (how to stop the first wave as kerrigan on various maps, including rtk)
A while back, I did some research on Kerrigan build orders and found a build order used by one of the best chinese players. After comparing this new build order with the one from sc2coop (and team liquid), the new one is more flexible than the sc2coop BO. It also only requires moderate tweaking in special cases like rtk, whereas the sc2coop BO requires a completely different opening just to survive.
I did all the hard work already, so now you just need to watch and learn.