[Typo3] From where to start writing an extension (documentation / resources suggestion)?

[Cyprian Kowalczyk]

On Wed, 17 Aug 2005 21:42:52 +0200, Jane Larsen <noesgard at gmail.com> wrote:

> It's not a document but have you guys been trying out the extension
> kickstarter video series? Where a cd collection extension is made step
> by step...

Right! I've forgotten about this one!
Thanks!

regards, Cyprian