To start a non-profit organization in Ohio, you need to take the following legal steps:

1. Choose a Business Name: The name of your non-profit should be unique and distinguishable from all other business entities in Ohio. You may also need to check with the Ohio Secretary of State to ensure that the name is available and not currently in use.
2. File Articles of Incorporation: For your organization to be recognized as a legal entity in Ohio, you will need to file Articles of Incorporation with the Ohio Secretary of State. This document should include the name of your non-profit, its purpose, and its registered agent or address.
3. Obtain Tax Exemption: You should apply for federal and state tax exemptions to avoid paying taxes on the organization's income. To receive a tax exemption from the IRS, the organization needs to apply for 501(c)(3) status.
4. Draft Bylaws: Bylaws are the rules and regulations that govern your organization, including its structure, governance, and operation. They will also help guide the organization's decision-making and ensure compliance with non-profit laws and regulations.
5. Hold Meetings: As a non-profit entity, your organization is required to hold regular meetings to discuss major decisions and vote on important matters.
6. Maintain Proper Records: You should maintain proper records of the organization's financial statements, bylaws, meeting minutes, and other legal documents.
7. Obtain Licenses and Permits: Depending on the nature of your non-profit, you may need to obtain various licenses and permits to operate in Ohio.
8. Comply with State and Federal Laws: As a non-profit entity, your organization is required to comply with all state and federal laws, including labor laws, tax laws, and non-profit regulations.

Some limitations or exceptions to this advice include the fact that starting a non-profit involves varying complexities depending on the specifics of the organization, its goals, and its structure. Furthermore, there may be additional legal steps that are required or relevant for your specific situation. It is, therefore, advisable to seek the advice of a qualified lawyer before starting a non-profit organization in Ohio.