The US dollar is the currency of the United States. The pound is the currency of the United Kingdom. Similarly, the bitcoin is the currency of the internet. it is a digital currency used by people across the world to transact digitally to buy products and services.
You need a bitcoin wallet to start with. You can send and receive bitcoins using unique addresses. Bitcoin transactions are stored in a shared public ledger called blockchain. Miners are people who are equipped with powerful computers to verify these transactions. They are rewarded with bitcoins every time they do their job.
No coins can be reproduced due to cryptography and to secure the wallet safe. The security used is similar to credit card transactions and electronic bank transfers. Bitcoin is not issued by any central bank like the Fed or the ECB. So, only 21 million bitcoins are currently in circulation. Bitcoin production is similar to gold mining, which makes it increasingly difficult to mine new coins.
Besides mining, you can also buy them through bitcoin exchanges. You can use them for purchasing in online stores. So, find a broker who offers you to trade bitcoins besides currency pairs.