If you have a reasonable computer (desktop or laptop), you can get started for the price of a webcam. Download some free software (try AnimaShooter Junior
plug a second-hand webcam into a spare USB socket, say a Logitech C920 USB HD…"
Gumby Imagined, The Story of Art Clokey and His Creations
The ultimate Gumby retrospective packed with incredible photos and never-before-shared stories. Written by Art Clokey's children, Joan and Joe Clokey, this is the most comprehensive book ever published on Gumby, Davey and Goliath and their creator Art Clokey, a pioneer in stop-motion animation.