Tony Whether someone finds belching embarrassing, funny, or irritating depends on where they are, who they are, and how much it's happening. When air gets trapped in the stomach it's expelled as it rises up through the throat and out as the familiar belch. It's normal each time we swallow for a little air to travel down to the stomach. If you're someone who eats or drinks too quickly or gulps down air when you talk then with each swallow more air than usual gets trapped. So take your time talking and eating, and chew your food well.
Peppermint oil is a very good traditional treatment for belching and other digestive complaints.
Again more air gets trapped that comes back out as a belch. Once these problems are addressed the belching stops too. A taste of acid in the back of your throat after belching may mean you have acid reflux. Eating smaller meals that are not too hot and spicy, not smoking, and keeping your alcohol intake to sensible limits should help. An antacid from the pharmacist taken after meals will prevent acid from leaving the stomach the wrong way.