Bitcoin is just like a bank account, but the difference is that you don't need to go to a bank and open account there to receive your IBAN. You can just use an Bitcoin address generator to create your Bitcoin IBAN which is called address. Also, when you generate your address you will receive a password so you can manage your balance which is called private key.
Bitcoin advantages:
- accepted worldwide, no bank restrictions
- you can spend or receive money during weekends and non-working hours
- no KYC/AML
- anonymous
- you trust maths, not banks
- Much cheaper for huge transactions. if you want to transfer $1mln or more worth of Bitcoin the fee will be around 1$ or less. If you try to transfer $1mln from 1 bank to another, you will get a fee of 1-5% which is 10-50k fee.