On a subject dear to me, since I'm full integrating LCC into my layout, a first book about Layout Command Control (LCC) has been published, and is available in paperback and Kindle editions from Amazon.

The book was authored by Dana Zimmerli, and guides a reader through first steps of setting up, configuring and operating various LCC nodes.

I believe Dana might make a PDF version available at some point, but don't quote me on that, as I'm not affiliated with the author.

I'm yet to read through it so I can't offer a review. Never the less, it's a first published book about this still young NMRA standard, which will hopefully set many modelers on the path towards adopting it on their layouts.