Bitcoin is a digital currency started in 2009 by an individual with a false name satoshi Nakamoto, Bitcoin is a network to network online payment method or digital currency which has no physical existence like the traditional money, it can transferred all around the world with low or minimal transactions fees.

There are various reasons as to why people need bitcoins, this bitcoins have changed the financial markets of transferring currencies world wide without a third party like the central banking system and this bitcoins can also be used a  good investment as the prices of bitcoins surpassed above the price of gold and reached upto $ 20000 USD.

I don't think that Newbies can join signature campaign, you need to increase your profile rank to member rank to get onto the signature campaign.