A few months ago there was a list of links to classic video game emulators posted. Very recently, I'm pleased to report, those links all came true. The Internet Archive bespoke upon aforementioned consoles, computers, and mileposts on our way to the tech utopia of today, (seriously, where's my flying car?) and they asked us to do something: Imagine every computer that ever existed, literally, in your browser. And it was so. I have absolutely no affiliation with jscott, btw. Thought I should disclose that.
ZX Spectrum Game Walkthrough videos. For those that, like me, have read that Jet Set Willy can be done, but never really believed it. Also, Manic Miner, Skool Daze, Sabre Wulf and Atic Atac constitute must-see viewing to the would-be Sinclair completist. Via GameSetWatch.