English Language at Britannica covers the history and characteristics of the language. Also see articles on the Germanic protolanguage and Proto-Indo-European.

I find this kind of stuff fascinating because I'm a bit of an armchair linguistician. Alas Es* studies linguistics and my two flatmates have in some way in the past aswell so I'm not allowed any bullshit. It's just an incentive to learn more, that's the way I see it.