So, although a detailed business plan may not be required for an online business, I am going to include it here so you can at least look at and consider each section and determine yourself if it applies to your business.
Executive Summary _ A business plan starts with an executive summary, which is a one or two page summary of your business plan, or an introduction to your business. Although this section is at the beginning of the business plan, it is the last thing to be written. You'll be able to condense your business plan more succinctly once you have the opportunity to work through the other parts of the plan. The executive summary may be the only thing a potential investor or financier will read, so write it last because it has to be the most compelling.
When you sit down to compile all of the elements of your business plan, make sure you have each section able to stand on its own merits. This means you should not reference other sections sending the reader (your potential investor) back and forth between sections.
Organizational Matters _ The ownership hierarchy of your business, the management structure, and the personnel are described in the section on organizational matters. This part of the plan deals with who, what and how your business runs. Who is in charge of what and how are they qualified? Discuss how the various parts of your business interact together; include details about outside contractors and consultants and what functions they perform. See the example below, thanks to Edraw Soft Vector_Based Graphic Design.