Poloniex was started in the year 2014 and has become a preferred platform for crypto exchange and trading since then. You might want to pay attention to this US based platform as it offers more than a hundred cryptocurrencies to its users for trading. What makes the exchange unique probably the most preferred choice of people like you is that, it holds the highest volume for Ether as it supports both Ethereum and BTC markets independently.
You could try this instead: Buy and sell on multiple exchanges; then, when you see those moments of indecision in the market, buy more of the cryptocurrency on the exchange with the lowest price, while simultaneously selling some on the exchange with the highest price. That way, your risk is mitigated: if the price rises, you’ve made money, and if it drops, you can buy back in at the lower price.
Before buying into a position on an exchange, it’s probably prudent to consider whether there’s enough liquidity to make a well-timed exit. Day trading is all about timing one’s trades, and many cryptoassets and exchanges don’t have the liquidity to support the near-instant trades an experienced trader might be accustomed to in trading stocks or forex. Consider checking the 24-hour volume of the asset, and verifying that the exchange allows you to both buy and sell the asset — some only allow you to buy, and some that allow you to sell might temporarily turn off selling at times of high volatility.
No, the successful trader is not me. I’ve gotten lucky a few times and I’m still refining and trying out strategies; on the other hand, I’m part of communities of people who trade on a daily basis to grow their portfolios, and while some of the results can be attributed to luck, a majority of it is based on fundamentals, good habits, and experience.