Please review below given links.
1. Buy Bitcoin in America Using Coinbase, Ideal for beginners first getting involved in bitcoin.
2. Buy Bitcoin and Ripple in America or Elsewhere Using
3. Trade or Daytrade Bitcoin for Litecoin, Peercoin, Namecoin, Novacoin, Terracoin, Primecoin, and Feathercoin at BTC-E.com
4.Best altcoin trading site at the moment with high volume and a good reputation
5.LocalBitcoins is considered a good way to buy bitcoins privately or with cash.
6. Buy bitcoin using USD and EUR by depositing via wire transfer.Moreover other national currencies can be converted to USD or EUR at transfer.
7.Buy Bitcoin instantly with 17 supported currencies. Visa and Mastercard accepted.
8. Western Union to allow you to purchase Bitcoins through your credit card. This service is not available in the US
9. It can accepts all major credit cards (via Paypal or Skrill) and allows you to buy SLL which you can then trade to Bitcoin.
10. It's a good one for beginners that need some bitcoin fast.
11. Another good one for begginners be and usually has more volume.
Don't Use Below Site
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1)Buy and SellBitcoins for Any and Every Cryptocurrency at Cryptsy.com
Reason
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The money from cryptsy were stolen so no one should try using that:
http://www.coindesk.com/cryptsy-bitcoin-theft-avoid-panic/
2)Trade a Huge Variety of Cryptocurrency at Decent Speeds (but Low Volume).
Reason
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There are many many reports from people being unable to withdraw coins from there as well as deposits going missing somehow. Support is slow and there is a big chance that they are still at massive losses from hacks a while ago.
Thank you
CryptoJeweler