Great session about Apple’s new unified system font, San Francisco from WWDC, presented by Antonio Cavedoni:
Fonts lay at the intersection of design and engineering. Get introduced to typographic principles and how they apply to the San Francisco fonts. Hear what makes this family of fonts unique and how to effectively take advantage of their advanced features. Learn best practices when designing and implementing interfaces with text.
If you’ve ever wondered what display type is, or if you don’t know that fonts themselves can have features, this session works as a great primer.