In order to follow signals you will usually need either BITCOIN or USDT (Tether - Digital Dollars) available in your wallet.
You can tell which one you need by the coin pairing code.
[COIN]BTC - Requires you to have Bitcoin available
[COIN]USDT -Requires you to have USDT available
You can easily change Bitcoin for USDT or USDT for Bitcoin if you find yourself short of one or other by using our conversion tool.
Find out more here: