History Field Trip to Germany!

[Zynth]

I'm going to Germany for a history field trip for 10 days starting from 31st May.

I'll be going to places such as <strike>New</strike> Berlin, Potsdam, <strike>Planet</strike> Nuremburg and Munich.
I'll also be going to Prague in Czechoslovakia.

So tell me. What should I be on the look out for when I'm in Germany? How's the weather during that time? What local food should I try? Do people in Germany know English as well? Any etiquette I must know so as to not insult the local populace?

Could also use some tips on basic German. Basic communications skills such as "How much?" and "How do I get to such-and-such?" always come in handy.

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