Making a deposit is pretty simple, even if you are a new player.
If you are using the desktop version, the first thing you need to do is to click on the Wallet button.
After you click on the Wallet button, a small window will pop up.
There you can choose the cryptocurrency that you want to deposit and you will get your personal deposit address to which you can send your funds.
It's a bit different on a mobile version. Instead of the wallet button, you will see the cashier button at the bottom of your screen. Just click on it and proceed as instructed above.