Some Helpful Links and Free Information...
RIFFING + MUSICALITY:
Wanna do some riff training? There's not much that can beat the fun of Natalie Weiss' breaking down the riffs series.
I thoroughly recommend this as an entertaining introduction to what the vocal folds and surrounds actually look like. Check through some of Mal's other entertaining videos while you're there.
More intense and pithy, this one is a helpful introduction to vocal anatomy and physiology.
So this is only for those who want to get super nerdy, but it's very helpful if you're trying to get a feel for what the cartilages and muscles of the larynx actually look like, from a 3D perspective.
FREE VOCAL PEDAGOGY TEXTS
Cornelius Reid's website contains two invaluable articles that are free to download, and I couldn't recommend them more. Just click on the "articles" tab in the top menu bar.
Title: Hints on Singing (second edition, 1894)
Courtesy of archive.org
PIER FRANCESCO TOSI
Title: Observations on the Florid Song (originally written 1723)
Courtesy of Project Gutenburg.
BLOGS AND WEBSITES ABOUT SINGING THAT I LOVE!
This is my absolute favourite blog on vocal pedagogy and related topics.
SINGWISE (KARYN O'CONNOR)
A helpful resource covering many topics related to vocal development and vocal health.
CHICKS WHO MIX (JEN DEROSA)
An informative and entertaining blog with realistic and helpful musings and advice about all things vocal technique.
This blog is always thoughtfully written and contains some helpful tips as well as some more philosophical musings about the voice.