Can't be changed so get yourself a new account if you really need that username.

Price is demand and supply. When demand is high, it often drives the price higher and opposites when demand is low and supply is higher.

If you compare the price from multiple exchanges in real time of any coins. It is almost impossible that all of them will be trading at an exact same price.

There is always a gap in price between each exchange.

Some traders are using these advantages by buying a coin from exchange A and transfer to sell on exchange B.

I highly recommend you to read further about arbitrage trading which will give you a better understanding.

Circulating supply is a number of coins that bought, sold or transferred a day (daily), month (monthly) or year (yearly). Coins with low circulating supply often faces liquidation problem especially with a large amount of investment.

When you are investing or trading any coins, circulating supply is important because it's basically a way in and out, when buying you need a seller and when you're selling you need a buyer.

I totally agreed with @odolvlobo and want to add few points.

Hardware - Mining is a business and the initial costs of setting up are considerably high while operating costs are slightly low compared to other industry. Machines in any businesses will depreciate over time, so don't overthinking about the replacement. The question is how fast will difficulty rises and take your current machines out of business? Will you able to make enough profit to pass the break-even point? Put those factors into your decisions making processes, because at one point in time, you will definitely need to replace them anyways.[/li][/list]

Software - Softwares with right configurations will run stable enough to keep you away for weeks or months. However, no software is perfect and any software can break down anytime without any warnings.

Pools - Unless you're pouring million dollars into the business, start with other pools. You might have to pay small fees but it gets you started. Markets are moving fast these days, as of now it's still profitable but who knows where it will go in the next few months.

Get your first rig setup and start mining probably be the best advice I could give to anyone. You will learn a lot by running your own rig for a day than spending weeks reading about it.

I'm assuming you're running two miners at the same time as two individual windows. Since claymore has designed to support dual mining in one window you should probably get use for its features.

Your current setting is


Add the following code for mining both ETH and Sia simultaneously or check the claymore thread for other coins setting



These are coins that claymore support dual mining along with ETH - Decred/Siacoin/Lbry/Pascal/Blake2s/Keccak

Yes, definitely and if you have credit cards and willing to pay for extra processing fees then there are a bunch of websites that you could purchase bitcoin with credit cards.

Yes. It's totally safe to keep your fund for daily use. I would recommend you to get yourself a hardware wallet as icroatt mentioned. Most people have two wallets one to store large amount of fund which usually be a hardware wallet (cold wallet) and another is an online wallet (cold wallet) like blockchian.info for everyday transactions.

Your profile is public and is your posted link public as well? Check whether your shared link has a globe icon near the date and time or not. If it appears to be two people icons then your link is only available to your friends.

You could use chrome incognito mode and open the link you gave to the manager to make sure it's working. (Chrome -> File -> New Incognito Window)

If you're pretty sure your link is publicly available then take a screenshot and send it to him.

It doesn't have to. Most instructions were written as the safest to install wallet on your local machine. However, if you're certain that your machine has never been infected before then don't worry about it.

Could you show us your Claymore script?

Below is the example script for dual mining with claymore (nanapool)