You have no idea of what is the best wine for your meal? You don´t know how to pronounce the name of the wine "Ribera del Duero"? Ask the waiter or sommelier, they´ll be happy to share their knoledge with you. This way you´ll be learning from them.
2 - SET THE RULES
Best wines will not be the most expensives (trust me, I´ve tried most of them). Don´t be afraid to set you price range. If you don´t want to talk about € / $ / £ you can point something on the menu and ask for a similar bottle.
3 - KEEP IT SIMPLE
In wine producer countries like Spain, we talk about wine in the same way as food: "I´d like something with strong flavour, powerful smell and no sweet please. Or maybe fruity and savory."
4 - FOOD FIRST
There are so many options of wine, so always best to choose the food first. Once you made your choice, think of what kinds of flavours would go best with your meal.
5 - TRUST YOURSELF
Every person is unique, so don´t trust others more than yourself. If you hear that the wine is having "ripe berries" and that sounds interesting to you, order that wine. It is all about enjoying and testing.