Worried about language barrier

I'm English speaking only and am flying into Beijing int. airport and need to get the bullet train to shanghai. I didn't want to pre order the ticket in case my flight is delayed or it takes me longer to get to train station. I was thinking it would be easy for me to find my way out of airport to train station and buy a ticket without Chinese language but now I am not so sure and I'm worried....how difficult is this going to be?