Plenty of people around the world live far from a good art library, have slow or tightly-capped net connections, and can’t afford to take pot-luck buying many paper books. It’s true there are some good old ebooks online via Archive.org and the Animation Archive, but such public-domain ebooks are about old-school traditional animation. So it’s good to see a recent free ebook from an outstanding digital animator. Shawn Kelly (award-winning Transformers animator) has written a 100-page book called Animation Tips and Tricks (PDF link, 12Mb) — and he’s giving it away for free.
“Blinks have meaning”. “Forget about the legs”. See, you learned something just by reading the contents page.
It may lack the layout and typesetting polish that a mainstream publisher would have brought to it, but the advice and tips are a top-quality masterclass.