Kraken handbook
From Kerbal Space Program Wiki
Description
There's already too much Krakens in KSP, but although are left to uncover. That would be more interesting to research and use them, rather than avoid them. — Nerem Kerman, Kerbal Wizard of the KSC
The Kraken Handbook contains knowledge about the Krakens and their uses (Nerem will be so happy!), and you can help him by adding your knowledge about the Krakens to this page (summoning, new krakens, uses…).
Summoning a Kraken
I don't know any way to do this, see Youtube or browse on the net.