At least from my experience, the biggest issue is finding a decent place to live. With this I mean: - if you don't speak German, then chances are you want to l

At least from my experience, the biggest issue is finding a decent place to live. With this I mean: - if you don't speak German, then chances are you want to live in the big cities (Berlin, Hamburg, Munich, Frankfurt, Cologne,...) where some fraction of the population speak English... but in those cities there's a huge demand for flats and the offer is not up to it. Also, just by not speaking German you cut probably 50% of the flat offers already because they are offered by people who don't speak English - if you just moved to Germany and you're applying to a flat, chances are they will ask you your last 3 payslips (this is not a law, but if they ask and you don't provide, well goodbye!)