PancakeSwap is a decentralized exchange for swapping BEP-20 tokens.
The PancakeSwap exchange
PancakeSwap uses an automated market maker (AMM) model. That means that while you can trade digital assets on the platform, there isn’t an order book where you’re matched with someone else. Instead, you trade against a liquidity pool.
Those pools are filled with other users’ funds. They deposit them into the pool, receiving liquidity provider (or LP) tokens in return. They can use those tokens to reclaim their share, plus a portion of the trading fees.
So, in short, you can trade BEP-20 tokens, or add liquidity and earn rewards. There are also other features we’ll cover later.
You’ll find these LP tokens in several flavors – if you added, say, BUSD and BNB to the pool, you’ll receive BUSD-BNB LP tokens in return. BETH and ETH? You’ll get BETH-ETH LP tokens.

Using PancakeSwap

You’ll notice if you visit https://pancakeswap.finance that many features are inaccessible until you click on Unlock Wallet. Click on it, and you’ll be met with a few options: MetaMask, Trust Wallet, WalletConnect, Binance Chain Wallet, and other options. But preferably i use Tokenpocket.

Download tokenpocket on AppStore or playstore,create your BNB wallet and save your private key and 12 letter words. Now click receive and send your BNB from binance by choosing bep20 .

After receiving the BNB click on dappbrowser and open pancakeswap.finance , connect your wallet and swap any token of your choice from your BNB. If you want to look for a token to buy, go to coingecko.com search for good token trading on pancakeswap.
Using pantherswap as an example, After seeing a token copy out the smart contract address and paste on the select currency axis on the pancakeswap swap page and set slippage 11% , the token will pop up then you can inter swap both ways and anything you want.
After making profit from the token you bought you can re swap back to BNB and send it back to binance and exchange your BNB to BITCOIN.

Is PancakeSwap safe?

PancakeSwap has been audited by CertiK.Does that mean it’s completely safe to use? No. Depositing funds into a smart contract always carries the risk of bugs, even for audited and highly reputable projects. Never deposit more than you can afford to lose.

SWAP EXCHANGERS

All swap exchange like pancake,sushiswap etc uses similar process in buying and selling of tokens so you just have to be familiar with the process.