Travel / From Germany (Tegel airoport)-Szczecin! Erasmus student travelling 27-9. [7]

Well, i hate to admit but at least for this one i acted like all these "people of the last moment"...

So, the thing is that tomorrow i will be traveling from Athens to Germany and then have to go to Szczecin (ZUT).

My main concern is wether i'll be facing a problem finding bus or train tickets (whatever you suggest) as soon as i get to the airport!

I' ve already visited the sites of some bus companies (INTERGLOBUS TOUR BERLINIA – ATLAS TRANSFER) but i don't know if i'm able to book tickets with euro and also from where actually these buses start...

As for the railway, i haven't still understood from which train station i should go to depart to Szczecin...Maybe taking the railway is better because regardig to a Szczecin city map there is a station really near ZUT (Zachodniopomorski Uniwersytet Technologiczny).

Thank you sooo much for any help and suggestions!
Greetings from Greece and soon, from Poland!