Medium – Mathias Barra
I love studying grammar my way so I’m a bit biased but, even for those who don’t like to study grammar, it’s still useful to have something to refer to.
German grammar scared the hell out of me before I started it. Well, in all honesty, it still does sometimes. Had I bought a standard grammar book, it’d probably have been the size of an encyclopedia. So, instead, I bought this mini textbook.