I actually found those initial tutorials that you posted Nicole the most helpful when creating my text block and differentiating perfect binding from case binding. All of her tutorials are super helpful and straightforward-- I highly recommend them!
As I was browsing for additional help though, I came across this site/blog that had some useful information about DIY binding (and beyond) as well. Check it out: http://nomediakings.org/doityourself/doityourself_book_press.html.
And thank you, Pinterest for never letting me down!