Press Buy/ Market on exchange A and the Press sell/market on exchange B
Withdrawn the fund from exchange A and send it to exchange B then exit the trade on exchange B.
This should be clear, still, from what you've write it doesn't seem so:
In order to sell on exchange B you have to have the coins you're selling and they have to be on exchange B.
From what I know you cannot initiate a trade with coins you don't have.
So, since you don't know what coin will be best tomorrow for arbitrage, you may want to buy the coins, transfer them and only afterwards sell them.
Does volume matter if exchange A volume is 5k and exchange B volume is 100k?
What if the volume on exchange A is 0 and the volume on exchange B is 100k will the arbitrage work?
The volumes do matter because low volumes usually mean that you may not find sellers at A (if A volume is low) or, more often, buyers at B (if B volume is low), making you end up either a bagholder, either one selling at a loss (also make sure the spread on B is not too big).
Can you arbitrage any coin? For example ZIL3S/USD-GateIO 0.379 to ZIL3S on MEXC – 1.81
I will not look at this or that altcoin for you, sorry.
As long as you can withdraw the coin from A and deposit to B, it should work. But usually good arbitrage opportunity for too long means one of the following:
* you cannot withdraw from A
* you cannot deposit to B
* the volumes on A or B are too low (basically dead)
So be very careful. And also take the fees into account (especially withdrawal fees).