HyperCard Zine
@ https://crime.team/~hypercard/
Personal tilde webpage of ex-Apple dev who is enthusiastic about Hypercard, providing information, links, and hypercard stacks.
HyperProgramming : building interactive programs with HyperCard
@ https://worldcat.org/en/title/1314364072
Book teaching the use and authoring of programs in the hypercard hypertext system. Reference resource for a certain time in hypertext history.
Hypercard stack archive
@ https://archive.org/details/hypercardstacks
Large archive of hypercards along with a browser-based emulator to run them.
Beyond Cyberpunk
@ http://www.streettech.com/bcp/
Hypercard series adapted to the web.
Decker
@ http://beyondloom.com/decker/
Web-app inspired by hypercard. Very easy to use and get started with. Also has a C version that runs as a native application.
Pathways and Relationships
@ https://archive.org/details/MacUser8712December1987/page/n163/mode/1up?view=theater
Douglas Adams writing about HyperCard for the Mac User magazine in 1987.
Hypercard website
@ https://hypercard.org/
Website by and for enthusiasts of hypercard, with resources such as the Hypertalk spec.