Hi mate, have you read these trading rules?
https://www.binance.com/en/trade-rule
The minimum trading with fiat pairs is $10...

And for the withdrawal fee, you can check completely on this and you should know which is best including the minimum amount and also fee to spend:
https://www.binance.com/en/fee/cryptoFee

And about to connect your Binance with a ledger nano with BSC, you can read this:
https://academy.binance.com/en/articles/how-to-connect-a-ledger-nano-to-binance-smart-chain-bsc