Here are the key steps to starting an online business:

1. Identify a niche and products/services to sell – Choose something aligned with your interests and skills. Research market demand and competition.
2. Build a business plan – Include financial projections, marketing plan, operational details, SWOT analysis, etc. This will be your roadmap.
3. Pick a business structure – Will you be a sole proprietorship, LLC, partnership or corporation? Consider legal and tax implications.
4. Take care of legalities – Register your business, obtain licenses and permits, insurance, handling taxes, etc.
5. Set up a website – Build an ecommerce site if selling products or service pages if offering services. Good design is key.
6. Select online tools – Pick platforms for email marketing, payment processing, accounting, project management, etc. Integrate them.
7. Market your business – Use SEO, social media, paid ads, content marketing, partnerships and other channels to promote your offerings.
8. Manage operations – Develop processes for order fulfillment, customer service, product/service delivery, returns/refunds etc.
9. Track finances – Monitor income, expenses, profitability, etc. Update budgets and forecasts regularly.
10. Grow your business – Reinvest profits to improve branding, technologies, hiring and expanding offerings.

With careful planning and commitment, you can build a successful and rewarding online business. Be consistent and patient.