Hey and welcome!
I recommend the Splintermind Podcast while you assemble. They have a 3 part series where get go over the units in the Index and give some tips on how to use them.
http://splintermind.libsyn.com/
Also check out Skaredcast on youtube. He have some short battle reports with a little tactics analysis after (seperate videos) that can shine some light on the faction.
https://www.youtube.com/user/SkaredCast
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Kabalite of Fractured Light