Same sort of idea, depending on whether I am in MP or SP.
In SP:
Settle:
Frankfurt (capital, just wait until it flips)
Danzig (1NE of starting plot)
Budapest (1S of deer)
Kiev (the game will call it Faustindorf, city 1E of deer)
Tallinn (the game will call it Reval, though I think Novgorod is a better spot)
Conquer:
Istanbul
Athens
Rome
Amsterdam (not sure about this one for stability reasons, but I'm not very good at the game)
Novgorod (for stability reasons you might be better off settling Tallinn than conquering here)
In MP:
Berlin (capital, you have to)
Frankfurt
Zagreb (1S of where you'd normally have Budapest)
Riga (because Berlin is farther than Danzig, Riga makes sense, 1SW of Tallinn)
Kiev
Conquer:
Istanbul
Athens
Rome
Amsterdam (still not sure about this

)