First is a podcast.
This year, NaNoWriMo and SheWrites have teamed up to create the Write-minded podcast and each episode has been full of great stuff about not just NaNoWriMo but creativity in general.
The website is here: http://podcast.shewrites.com/episodes/
The direct feed is here: http://podcast.shewrites.com/feed/
The NaNoWriMo page about the podcast is here: https://nanowrimo.org/podcast
Second is a book by NaNoWriMo Executive Director Grant Faulkner.
The title is Pep Talks for Writers: 52 Insights and Actions to Boost Your Creative Mojo.
As I type out this post, it is just $1.99 for your Kindle on Amazon. Of all of the writing books I have read lately, this has been the one I have most enjoyed and I am taking reading it very slow so I can have it for my breaks at least in week one of NaNo (unless I just end up tearing through it before then which certainly might happen).
I have found that every little bit of information helps but too much information is information overload and just wears me out. It's getting down to the last days before NaNo now so I am really slowing down what I am taking in to my head at this point.
Until the end of the month, I am trying not to completely overthink the writing process but the two resources above are providing just enough to keep me on track.