It’s generally pretty easy to understand Ethiopian food if you know a few things. As others have mentioned, the food will be served on a platter covered with injera, a spongy bread. There will be one platter for the entire party. The dishes you’ve ordered will each have a spot on top of the injera.
You will also be given personal pieces of injera. This takes the place of western utensils. You tear off a piece and use it to pick up a part of one of the dishes on the platter. Yes, use your right hand, although most Eritrean restaurants in this country know that Americans wash their hands regularly, and so it is sanitary to eat with your left hand.
They serve all kinds of meat and vegetables, except pork. Beef (tibs), chicken (doro), and shrimp are most commonly found, but goat, lamb (yebeg) and minced meats and other meats are found, as well. The primary vegetable is lentils, and that’s probably the only food most people in the region eat. You’ll find cabbage, collard greens, chick peas, tomatoes, cauliflour and other vegies, as well. One good dish at the restaurant I eat at is mushrooms (Yeungodai).
There are two major ways the food is prepared, and several other ways, as well. The major ways are watt (really, really hot, if it’s authentic), and alicha (mild). There are various other styles, but you will usually see explanations of each style in English.
The key is knowing that Watt is hot and alicha is not. Also, if you are prepared to eat with your hands, you’ll do fine. If you order hot food, beer is a good drink to go with it. You should probably get one dish per person less one, and make sure you cover all the bases you are interested in. We usually get a mild chicken dish (which comes with a hardboiled egg), a spicy shrimp dish, and a vegie dish, usually lentils and sometimes spicey mushrooms. There will be lentils and other sides as well that appear on the platter.
If you have kids who like eating with their hands, it’s a great place to go. They might not like foreign food (get mild dishes) but they’ll be tickled pink that they have to eat with their hands. Have fun!