CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. The vast majority of retail client accounts suffer capital losses when trading in CFDs. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
Currencies issued by a government; "normal" money backed by central banks. Fiat money has value because of this government and treasury backing, or because its value is agreed upon by those trading it.