I prefer to trade on decentralized exchanges. For myself, I made a choice in the form of ethnermium.сom. They have a huge number of coins. There are no minimum restrictions on trade and fees are so insignificant that you will not notice them. I also think the advantage of the easy creation of a wallet like MeW and easy integration with metamasks and a high level of security
If you have an account on Poloniex.com or Bittrex.com (and other crypto exchange sites) you can use their API with TabTrader to easily trade and monitor prices on your phone. It's important to me that the app connects to Poloniex and Bittrex because these exchanges have good volume. And they're pretty credible. TabTrader supports other major exchanges too :)
Continually doing these things can lead one to gradually cultivate a strategy: a collection of signals that one is good at recognizing and that have a consistent track record. Some traders only buy or sell once they see confluence: multiple signals indicating the same oncoming reversal or trend continuation at the same time. For instance, they might look for candlestick patterns indicating a reversal on both a short-time-interval chart (like a 15-minute chart) and on a long-time-interval chart (like a 4-hour chart).
TIP: A good first foray into cryptocurrency investing is the obvious, buying a major cryptocurrency like Bitcoin. After that, you’ll probably want to trade USD for crypto on an exchange like GDAX. Once you have done that, you could try trading BTC and ETH for other cryptocurrencies. Trading “crypto pairs” can be rewarding, but it is more complex and often more risky than just buying a single cryptocurrency as an investment.
For example, if it was thought that things were getting very frothy, and most of the people who were getting in were just gamblers who were buying on credit, then that might be the time to cut loose using that as your signal rather than using a technical one. On the other side, if you have cryptocurrency that is just hammered to the floor with everyone thinking it’s dead and everyone’s out of it, one can use this opportunity to make a few purchases as a long-term investment and wait for the upturn.
Kryll offers functional blocks that can help you. One of them, Market Trends, provides market information including price fluctuations, demand versus supply analysis, machine learning based market predictions and other options. In your strategy you can also include your preferable trading actions, such as buying, selling, splitting amounts into subsets, and many others.
NOTE: Once you have Coinbase down, try moving onto GDAX. It’s, in overly simple terms, like a better version of Coinbase with lower fees. Coinbase operates both platforms, and both use the same logins. GDAX is the preferred exchange of many Bitcoin traders in the U.S. It caters to both pros and novices. After you master that, then consider exchanges like Bittrex and Binance.