Interesting idea and great looking project. Good Luck

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It depends upon the coin. If the coin is pump and dump type I would prefer trading for quick gains but if coin is backed by serious team and project is good, I would prefer holding.

Never heard of them. I advise you to use big and reputable exchanges. There are many crypto exchanges that are existing just for the purpose of scamming traders.

Any official website? When I click website in coinmarketcap, it redirects to facebook and it also shows market price of 0.00000002BTC for TCoin.

Try DeepOnion. I had tried them and are trusted for paying bounties.

If you are new to mining, you can try minergate for mining as it will be easier for you to use due to GUI

Ask their support may be they have some sort of API that provide the required data to build your own candle chart.

I had never heard of them. Never use wallets that are not famous. There are many wallets available and their only mission is to rob newbies.

ARK is doing good. With 8 seconds block time they are definitely one of the fastest in industry. I think they will do good in future because of different minds form 11 different countries working together as a team.

I use bitstamp, they allow you to exchange to euro but they only support BTC, ETH, XRP, LTC and BCH.

I have not seen any community or development team as transparent as DeepOnion's team.

I always use twitter. Even if its a rumor on twitter it aways help in bringing the price of the coin or token until clarified by main developer. Also follow official accounts of each coin so you can get the news about the upcoming development or feature about their product as every new release help in lifting the price of coins.

Another site is http://coinmarketcal.com you can get news on that site.

If you are looking for any pump and dump group, I will advise you to stay away from them because you will always loss. If you do not understand this, ask yourself a simple question "Who is stupid enough to inform you before buying so you can buy and then they will buy from you at higher price?"

You are right DeepOnion has a great potential in future with other nice features beside privacy. Once they implement DeepSend, they will be unbeatable. The other good thing about DeepOnion is their development of Plugins for different shopping carts (like Woo Commerce) and client and invoice management systems (like whmcs), It will definitely help them in bringing their currency into mainstream with real use cases.

I had not mined DeepOnion but I think it will be more profitable to join airdrop and participate in the forum because it is the easier way to get free Onions. As far as your miner is concerned, you can use it in mining other alt coins.

Nice resources. http://coinmarketcal.com is also good one to keep track of development and updates of different coins and tokens.

Instead of app on ios you can use mobile sites of exchanges. Thats always work.

Holding is better for long term because 90% day traders lost more in terms of purchasing power of coins. Holder of LTC at 100 is now worth 3x plus but the trader who traded it for 150 with 50 profit can now buy only half LTC. Considering he has not done any other trade with either profit or loss.

You can not do anything. Sending BTC to wrong address is similar to drop your wallet somewhere you never know. The only possibility in those cases is that, that some honest person finds it and give it back to you.

People wait because they have seen big correction in past and it can also happen in future but when, no body knows it. Every market take a break and correct itself so does crypto market.