An alphabet made entirely of “undecidable” figures, two-dimensional objects that look like 3-D projections but, on closer examination, are geometrically impossible. Frustro is the work of Martzi Hegedűs, a 25-year-old graphic designer at the Hungarian University of Fine Arts who was inspired to create a typeface inspired by Escher. 3D Typefac, Frustro Typefac, Graphics Design, Brainbreak Typefac, Brain Break Typefac, Martzi Hegedű, Cool Optical Illusions, Impossible Typefac, Design Style
Type Guide - Created by someone who only calls themselves Noodlor, it does a pretty superb job laying out the basics of typography, such as the common types of faces, ranging from regular to condensed, and the anatomy of letterforms. There's also the very keen nugget of wisdom that 95% of graphic design is actually typography.