cash basis is really a misnomer. you buy a truck and finance it. report on balance sheet full cost of truck and the loan you take depreciation which is deductible on page 1 and the accumulated depreciation is reported on the balance sheet. you pay an expense with a credit card. the IRS says its deductible when the liability to pay the vendor became the credit card company's responsibility. result expense on page 1 credit card liability in balance sheet.
maybe take a bookkeeping course at a community college.
a basic understanding of accounting is necessary for businesses. so are tax rules. for example, you buy "inventory" for sale to customers. if you revenue is low enough the IRS you can expense it. may rules and tax and accounting don't always agree. if you use the cash basis to begin your business, it could grow large enough to require switching to accrual basis and you just can't just do it - certain tax forms must be filed.
so maybe you want to try Quickbooks or other bookkeeping software. however, I think you would be best served by a tax pro or bookkeeping service. the product that a bookkeeping service produces is not guaranteed to be in conformance with tax rules required for reporting
