There are several methods of making a deposit to a CSGO coinflip site. They can be different depending on the website policy and terms. You should read about possible ways of depositing in the rules of the site before dealing with it. In most cases, you can deposit your CSGO skins from a Steam account, VGO skins, real money taken from credit or debit cards, money from electronic wallets or crypto currencies. For this purpose, you need to click the Deposit button on the main page and follow the offered instructions. Your skins then can be transformed into special gambling coins for betting activity.