Greece to Munich, best way to get there

[rc1078]

I am thinking about a short little trip for two weeks in september. I am in the very early stages of planning. So heres my questions.

I live in Minneapolis, and I can catch a direct flight from here to Amsterdam. Thinking of flying in there and going to Germany for Oktoberfest. From there I want to go to greece. What is the best way to do this? Flight? Train/ferry? What do you guys think??

Should I start in Greece and then go to Germany and leave from Amsterdam?

Talk to me.

Thanks in advance.