The Edge team put together a thorough demo of variable fonts, showcasing them in all of their shape-shifting and adaptive glory. Equally interesting as the demo itself is a history of web typography and where variable fonts fit in the grand scheme of things.
This demo pairs well with v-fonts.com, which is an interactive collection of variable fonts that allows you to play around with the variable features each font provides.
It was once famously said that the web is 95% typography. You can't be a web designer and ignore type! Frontend Masters has an in-depth course on web typography from Jason Pamental getting into things like responsive styles, variable fonts, font loading, and more.
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