The cost of starting an online business can vary widely depending on the business model, niche, and marketing strategy. However, you can expect to spend money on website design, development, hosting, and marketing.

You should consult with an attorney and accountant to handle legal and tax issues for your online business. You may need to register your business, obtain licenses and permits, and comply with local, state, and federal regulations.

You can measure the success of your online business using various metrics like website traffic, conversion rates, customer acquisition costs, customer lifetime value, and revenue.

An effective business plan for an online business should include an executive summary, market analysis, marketing strategy, financial projections, and a description of the products or services you will offer.

You can monetize your online business in many ways, including selling products or services, affiliate marketing, sponsored content, display advertising, and creating online courses or digital products.