The disadvantage of doing arbitrage is you need to wait some minutes to transfer your coins and more possibly when it comes the price on that exchange also dumps already.
How can you earn and how much you can earn is depending on the coins and capital that you have.
if you are "relatively new" to this market then it is best to stick to normal ways of trading instead of trying other weird methods and complicated ones such as arbitrage. because for example one of the things you will need in arbitrage (in my opinion) is a fast bot with a good internet connection so that you can act fast on opportunities before someone else does in your stead.
the usual way of trading, buy low and sell high, is much easier and it is even more profitable when you learn it. there is no reason for using arbitrage with all its risks to earn a small amount of profit.
To do arbitrage successfully you cannot wait for transactions to get from one exchange to the other. Arbitrage opportunities are only fleeting and you have to act immediately. To do this you need to have equal amounts of each currency on each exchange so you can go long on one and short on the other. Then you can move the funds after you flatten the trade.
Thank you, guys.
You helped me to understand this questions.
It is really need to think and weigh the advantages and disadvantages.