The Payee field usually contains information about a payee but sometimes it may contain other data (for example, description of a transaction). Choose one of the options from the list.
Usually file encoding is recognized automatically without any problems. However if the program cannot recognize encoding and you see gibberish instead of meaningful text, you can select encoding from the list.
In a QIF file, the first transaction from the list contains information about the opening balance of the account. Usually it is recommended to ignore this transaction.