MetaMask
What is it
MetaMask is a browserplugin that provides a crypto wallet. You can use it to connect to a Defi exchange to swap or trade your altcoins.
Exchanges
Many exchanges and crypto related platforms like poocoin support MetaMask. You can easily change from one exchange to another to stake some crypto here and trade some crypto there. This can also be helpful to work around the Gas Fee if it is to high on one exchange or the other.
How to use
You can use a Binance account to trade it into a coin you would like to use on Pancakeswap. I send BNB from Binance as that is the native coin for Binance, you also need some BNB on Pancakeswap for Gas fee.
Gas Fee
The exchange rates for swapping coins on Pancakeswap are low and are paid from your BNB. For every transaction you pay a small percentage to the network. This is called Gas Fee.
Networks
Metamask supports many networks so you can use it for many different coins.