Financial controls will be needed to account for your revenue and expenses. To help you understand what financial controls may entail, here is a sample from another organization.
Tax-exempt nonprofits face certain public disclosure requirements by law. They must provide copies, upon request, of their three most recently filed IRS Form 990s and their application for tax-exemption. The National Council of Nonprofits provides further explanation and resources.
Nonprofit newsrooms that are members of INN pledge to be transparent about the funding of their news operations and maintain editorial independence from all revenue sources to ensure news judgments are made in the interest of the communities they serve as journalists. They may post their 990s online and make public a list of their donors as part of a donor transparency policy (example).