Bitcoin which is a digital currency that is used for digital transactions by many online earners, it is usually a two parties affairs that doesn't require bank. It value fluctuate which makes people to trade in it. It is both good and bad to different people who have different opinions about it.
There are people of who have made money from bitcoin through mining, trading and gambling, to these set of people bitcoin is very good and worth the risk involved in it.
There are people who believe it a scam being the fact the coin is virtual and the annoymit in the transactions.
If you want to give bitcoin a trier you will need a wallet to store your bitcoin either a software or hardware wallets. The most common ones are the software Wallet that can easily be getting by signing up or downloading the app versions on playstore. The common ones includes blockchain, coinomi, coinbase lino etc