getting started

I would like to help my dad setup a QBO for his woodworking business that he owns and operates independently. He has never used a bookkeeping software or service. He also does not have a history of cleanly maintaining an online record of business transactions and financial statements. I am considering to purchase live expert help to construct historical financials for his business and to establish a baseline for bookkeeping moving forward. Is this something a QuickBooks advisor can help with? What is the minimum documentation (e.g., tax returns, bank statements) that QuickBooks advisors need to provide this requested support? Do advisors have experience working with business owners who do not have a history of maintaining  online bookkeeping records?