california roll is a safe bet for most people. it's (fake i think) crab meat and alvacado so you don't get a cold peice of raw fish which is good for newbies... plus its pretty popular so you should be able to get it.
other than that, look for rolls that have baked/cooked meat so you arn't eating raw fish while you're getting used to the rest of it. they'll put ginger on your plate which is this offwhite colored stuff used to clense your pallet between the different rolls, but its sweet and alot of people put a peice of it on their roll and dip it into the soy sauce type stuff they have on the table (they'll give you an empty bowl, you pour the sauce into it) so it kind of masks whatever you're eating. shrimp tempura rolls are cooked and pretty good too.
if you're drinking saki you can order whatever you want, you'll be able to eat it eventually.
stick with the rolls though (maki rolls), if you get just the raw clumps of fish with skin still on them you probably won't like it to much if you're trying to ease yourself into liking sushi. get the miso soup over onion, its like tofu in some seasoned soup water... its not awesome but it's better than onion.
also keep in mind one roll is usually 4-8 peices depending on how they cut it, so 2 or 3 rolls is all you need to order.