I know that this is common for most of you, but I just haven't done this before.

I have a United award ticket; first leg is on LH from EDI to FRA on ticket from United. I connect in FRA to a UA flight to IAD., and than UA onward to ROC.

I assume that I check in with LH in EDI and probably just hit a transfer desk in FRA. Any special tricks or procedures that I should know about