What are some essential Cisco ACI material for a complete newb in that space?

Short story is my company is entertaining Cisco's ACI solution and I recently attended one of their seminars on it but to be honest I was having trouble keeping up with everything. I understand the gist of it but I feel like I'd really benefit from some sort of course that guides you through the concept and practical aspects.

Any books/blogs/web courses would be greatly appreciated.

I have access to CBTNuggets and have been watching some of the CCNA DC where I see it mentioned but there was only 3-4 videos on it that were pretty vague.

I'm also enrolled in David Bombal's web course but there isn't much on ACI specifically either.

Thanks!