Eating/Dinning Etiquette

Did you know what these different cutlery setting stood for? Did you also know that when you are in a Restaurant (Abroad,don't know about Nigeria) and you are given the menu to order,until you close it and place it on the Table,no one will approach you to take your order.... I have learnt a lot of things on how to behave at the eating table and some of these things that one must not do via IFTTT