Hi all,
Thanks so much for sharing your input & helpful resources 
I checked internally & the Product Marketing team is aware we need to update and refresh our Youtube presence. Hopefully we'll have our more recent content pinned to our Youtube home page, along with some new content soon. I've also shared the feedback with the docs team, so that we can ensure we're surfacing relevant and up to date documentation.
As you're learning Retool, I highly recommend leveraging this forum. Many posts have helpful solutions from our community members 
and every post gets reviewed by a Retool support engineer