TechCrunch once called iFixit “a how-to site for crazy people”. After all, its users take apart MacBooks and iPhones, among other devices, and then post photos of the disassembled pieces on the website. But all this dismantling is carried out for a good reason – to learn how to fix gadgets and help others do the same.

Based in San Luis Obispo, California, iFixit was founded by Kyle Weins, a 28-year-old with a penchant for DIY. When his iBook broke in 2003, he decided to repair it himself, but realized there was no product manual available for him to refer to. Weins figured there were probably other people in similar situations, so he started iFixit to provide free online manuals to anyone who needed them. He coded the website himself, of course.

Aside from providing illustrated repair guides and troubleshooting tips, iFixit also sells service parts and repair tools for less. There’s an online community where users can ask questions and discuss problems as well.