The Entity Systems wiki is pretty good – simple source-code examples in 5 different languages, and links to 10 x richer, more complex “frameworks”.
But it’s got little (almost nothing) in links to articles, introductions, tutorials on the topic. I know there’s a lot that’s been written – just look at all the trackbacks on my old ES blog posts.
Let’s fill out a page on the wiki with tutorials, techniques, etc. What are your favourites (and can you give a 1-sentence summary of what each one does well?)