Bitcoin mining is a very competitive niche to get into. As more and more miners come on board with the latest mining hardware the number which determines how difficult it will be to mine the next block of transactions. The higher the number, the harder it will be to mine the next block the difficulty to mine increases each day. Before even starting out with Bitcoin mining you need to do your due diligence. This means you need to find out if Bitcoin mining is even profitable for you.
The best way to do this is through the use of Bitcoin mining calculator. Just enter the data of the Bitcoin miner you are planning on buying and see how long it will take you to break even or make a profit. However, I can tell you from the get go that if you don’t have a few hundred dollars to spare you probably won’t be able to mine any Bitcoins. Once you’ve finished with your calculations it’s time to get your miner. Make sure to go over our different Bitcoin mining hardware reviews to understand which miner is best for you. Today, the is the newest and most powerful miner.
From Beginner's Guide to Mining Bitcoins
http://fedlan.com/itm/ 
