Train info is here, frequent trains if I remember correctly.

http://www.raileurope.com/europe-tra...n-station.html


I left my carryon at the airport.

http://www.frankfurt-airport.com/con...u/storage.html

Check your other bags on through with your connecting flight.


Here is an old thread about this.

http://www.flyertalk.com/forum/germa...e-lockers.html


Just ask anyone in the airport, they are very friendly and helpful and will point you in the right direction. Lufthansa customer service folks were great.