Well, you can only deposit Bitcoin on here. You will need to purchase some Bitcoin first, you can do that from the following sites. *CLEARNET WARNING* www.CoinBase.com (USA Only / Require Personal Information / Bank Transfers) www.LocalBitcoins.com (Wide range of payment methods) www.BitStamp.net (Bank Transfers) I'm not really sure how you can use a VISA to purchase Bitcoin, maybe if you're located in the USA you can use the card to buy a MoneyPak card from a store and then purchase Bitcoin from LocalBitcoins?