There are two ways you can fund your wallet.
You can either fund it yourself by "Topping Up" you wallet through depositing via a credit card or;
You can have someone else send you money via scanning your QR code. You can find your QR Code under "Payments" (bottom navigation bar) and select "Receive" on the top Tab Selector. You can also find it under "My Details" when navigating from "Profile" (bottom navigation bar).