We are a new restaurant and I need to know how to enter the beginning balance for the banking info
How do i enter the beginning balance for a new company?
How do i enter the beginning balance for a new company?

Depends on what balances you want. You can enter the balances during the setup interview or directly into QuickBooks.
If you have an accurate trial balance from a previous month/year, enter it as one journal entry.
For the Checking account, enter only the reconciled bank statement amount in that journal entry, but do not enter any a/r or a/p amounts.