Studying blockchain is a bit confusing, just as I started learning the very confusing blockchain. Blockchain is one of the technologies behind the development of Cryptocurrency which is simple. Blockchain is a data structure that can not be changed only can be added only. Any data from Blockchain are connected, if there is a change in one of the data block it will affect the next data. With blockchain every transaction of bitcoin is stored in an Open Ledger distributed into a bitcoin network. Each blockchain will be distributed to each computer connected to the network. On each addition of data there will be check whether the data is valid or not, this process is called mining.

Crypto currency may pose a risk to the financial stability of state banks, if adopted on a wide scale. Basically Bitcoin is not risky because the scheme of its use is still small, but it can change if Bitcoin grows significantly.

Online Bitcoin Wallets can use :GreenAddress, SpectroCoin
Mobile Wallets for Androind can use : breadwallet, Mycelium, Bitcoin Wallet
Mobile Wallet for iOS can use :breadwallet, copay, Airbitz

Bitcoin price are unstable because of the many threats of hacking, bitcoin security and cryptocurrency are still lacking, another reason why bitcoin prices are unstable is because bitcoin prices are determined by everyone who has bitcoin, if we suddenly sell all our bitcoins, then the price will move down, and vice versa if we buy lots of bitcoin, then we have contributed to the number of bitcoin demand, so the price will move up.

there are many reasons why bitcoin decreases, but it is normal, and it will gradually rise again

in my country it is not a problem, bitcoin users can easily convert bitcoin into local currency in our country, even in our country regulations Act on bitcoin has not been applied yet. but we will do within the limits of our own judgment.

an electronic currency that has a uniqueness that may not last long, because it uses a mysterious algorithm whose originator is anonymous. no one really knows whether the algorithm used can be trusted to generate the promised bitcoin number, or that will be responsible for errors or fraud.

In my country all fees for transactions or withdrawals incurred in the digital market will be taxed.

Yes, because by making cryptocurrency alone will provide some benefits. This one of a safe method to get the cryptocurrency and enters the market for crypto newcomers. but this requires time, due to efforts to build our own funds with crypto compared to other methods.

yes, because it is very harmful to us, if someone takes or claims that does not belong to us it can already be proved that they committed a great crime.