The difference of bitcoin from other currencies is its safer or more secure beacause it cannot be duplicated, manipulated or forged. The governments does not control bitcoin unlike the local currency. Bitcoin transactions are registered in the blockchain unlike cash you may or may not record the transactions. All bitcoin transactions are made over the internet and is public which include your bitcoin address.

Because governments dictate currencies and how they transfer from bank to bank and monitor the movement which they can locate at see who profits in it as well as collect taxes which they have the ultimate control. The government does not control bitcoin.

                  The best wallet for Bitcoin is Paper Wallet.
 
It generates public and private key from your browser or download generator.
The private and public keys are printed together in QR form which also serve as the address.
It is an online wallet.
Paper wallet is made out of paper but they can also be made out of plastic or any other substance on which information can be printed.

The Countries That Banned Bitcoin are:

1. Australia
2. Germany
3. Indonesia
4. Hongkong
5. Japan

Your friends can buy bitcoins and other cryptos in:

1. Coinbase
2. Bitstamp
3. BTC-e
4. MtGox
5. Bitfinex
6. BitcoinAverage.com

Before investing understand first what  cryptocurrency is, what is bitcoin, what are the different cryptocurencies. Be sure to understand what you are investing in. Here are the steps in investing:

1. Open up an account in popular exchanges like coinbase.
2. Invest in small amount.
3. Buy Bitcoin or other cryptocurrency.
4. Research and continue educating yourself
5. Talk to people who are experts, to different individuals who have invested in cryptocurrencies. You can also join groups like facebook.
6. Allocate/divide your investment in different cryptocurrencies by taking baby steps. 

A Bitcoin Wallet is a piece of software to be use to communicate with bitcoin network. It is use to send or to receive transactions. Every bitcoin account has a public address, just like an email address and private key or password . We use public address to send or receive money. On the other hand we must protect our private key and never reveal it from anybody. If someone knows your private key they can steal your bitcoins and send it somewhere else. 

Bitcoin is valuable because of the following features:
1. It is limited just like gold.
2. It is decentralized meaning it is not governed by the government.
3. It can be transferred directly thru peer to peer or from individual to individual.
4. It is easy to buy and sell. No bank to bank needed although it is prone to scam so be sure to know the person you are dealing with.
5. It has a low transaction fees, no hidden fees and is irreversible or no charge back.
6. The people were the ones who put value in bitcoin.
7. It is protected by inflation. Only 21M bitcoin will be circulated in the market.

The bitcoin price is getting low because a lot of people sold their bitcoin. Maybe because of news circulating around about bitcoin that it might be banned in other countries. A lot of people got scared which prompted them to sell but if you sell your bitcoin you might be on losing end. Don't sell your bitcoin even if you hear any bad news. No one knew if that stories are true. Let's observe first, understand what is going on.

Bitcoin was created by Satoshi Nakamoto and he announced it on January 9, 2009.

You can join some campaigns to make money in crypto. You can also invest without money, you just have to invest your time and effort in doing the campaigns. You can cash out or sell it when the price of the crypto is high, you cannot cash out or sell it if the price is too low because if you cash out or sell it right away you will just loose some of your crypto. For me you have to do long-term investment so that you can earn 5x the crypto that you have. For now the crypto price is low you can just buy crypto rather than selling what you have.