The only apps that can do trades right now are the mobile apps for the various exchanges. And to view the market and coins available, the most popular site/app is Coin Market Cap. But there really isn't one that can handle everything for you. Which is why I'm currently building out an app called Matrix Portfolio, that will help you automatically pull in your trades from exchanges, so you don't have to manually enter them. As well as allow you to discover all the coins, and offer trading insights as well. Feel free to pre-register for the beta here:
Traditional Crypto Exchanges: If you see yourself as someone who has enough experience of dealing in the stock markets, traditional crypto exchanges might seem familiar to you. These platforms operate in a similar manner except for the fact that they deal in cryptocurrencies rather than fiat currencies. They also charge a small percentage of the trade in the form of their platform fee. Example- Kraken

The platform offers you with good charting, trade history as well as functional order book where you can place orders on your preferred price. As your amount matches with an order of opposite matching, your order will automatically get partially or fully filled. Being a new market player, currently allows you to register and create accounts for free. It also allows you minimum exchange fees, i.e. only 0.2%.
Many governments are unsure of what to class cryptocurrencies as, currency or property. The U.S in 2014 introduced cryptocurrency trading rules that mean digital currencies will fall under the umbrella of property. Traders will then be classed as investors and will have to conform to complex reporting requirements. Details of which can be found by heading to the IRS notice 2014-21.

Bitcoin Trading in Tight Range With Lowest Volatility in Months BTC Hitting Oct 2017 Support, GBTC Hitting Sept Support You Are Going to Need Ether for Coinbase Wallet There Was a Major Bug in Bitcoin’s Code, but Developers Fixed it Van Eck SolidX ETF Postponed International Bitcoin Transfers 1,000s of Times Cheaper than Banks Charlie Lee Busts FUD in Epic Twitter Posts (i.e. a List of Reasons Why Litecoin is Awesome) The CNBC Fast Money Counter Indicator Bitcoin Flash Crash at Cboe XBT Expiration Date; Most Alts Refuse to Panic BTC is Trapped Under Some EMAs and Has Been Most of 2018

Binance are relatively new on the block but are poised to become the biggest digital asset exchange service available. Crucially, Binance are likely to eventually limit the number of users they take on, much like some of the other exchanges, so I recommend opening a Binance account today even if you don’t use it anytime soon – then you at least have the option.

The victims of the dotcom crash would talk about “the smart money,” this group doing that to another group to make money out of them. Narrative is a weak basis for investing. In crypto-times, people talk about whales as if there is a secret level to the game and secret methods available to those who are big enough to trade in great size, where they can’t lose, but you can. The whales won’t let the market do this, or do that, just in the same way as the smart money was dreamt to operate.
PentaFund is an actively managed fund (as opposed to passive investment funds, such as the Vanguard 500 index) made up of cryptocurrencies, blockchain assets, and traditional assets. It applies modern portfolio management principles to the world of cryptocurrencies. Arbitrage, leverage, short selling, hedging strategies, derivatives, as well as technical, fundamental, algorithmic, and trend analyses are all used to take advantage of the growth and opportunities in the crypto space.
This link explains how to use moving average analysis to identify potential opportunities. The short version is that if we see the EMA cross above the SMA and begin shooting upwards, we know that the price is beginning to beat the trend, forcing the trend to change directions. This can make these cross points a good entry point for a trade. Similarly, a good exit point for a trade is usually when the EMA crosses below the SMA.

In case, you do not wish to hold the token, you’ll be charged a small fee of 0.1%. Moreover,for depositing cryptos, you’ll not be charged anything but at the time of withdrawing, you’ll need to pay 1% fee with the minimum withdrawal of USD 15. Overall, Bibox offers an easy to use platform for you with a large array of cryptocurrency assets for trading.
If you are doing any active trading, set stop losses. For any coins not in your medium or long-term holds, always set stop losses. This is important for several reasons — the most obvious is mitigating your losses. But more importantly, you force yourself to decide on a point of acceptable loss, and because you now have a reference point, you are able to measure your effectiveness to keep or adjust for future trades. Sometimes, during a market dip, altcoins can plummet, and stop losses can lead to profitability by automatically selling for fiat that you can use to re-enter at lower prices.