I think I'd start first with any local PASS chapters, just because they're close, and likely free or low-cost.
After that I'd move on to some of the in-person Brent...

Last year I discovered the "Monster Hunter International" series.  They're a relatively fun read (if a bit grim sometimes.)  There's a new one due out in a month or two...

While I realize this would eat into the total available learning time, I tend towards the "learn skills that are useful for your current job, while also spending time learning...

It's amusing to post a reply to a blog post, which is asking people to try to guess where some really janky SQL code came from (but not give away...