Starting an ecommerce business with some savings can give you a head start and allow you to invest in marketing, website development, and other essential aspects. Here is a detailed guide on how to start an ecommerce business with your savings:

1. Research and choose your niche: Identify a profitable niche that aligns with your interests and has enough demand. Conduct market research to understand your target audience, competitors, and potential market size. Tools like Google Trends, SEMrush, and Amazon Best Sellers can provide valuable insights.

2. Create a business plan: Outline your business goals, target market, product sourcing, marketing strategies, and financial projections in a comprehensive business plan. This will help you stay focused and organized throughout the process.

3. Register your business: Choose a suitable business structure (sole proprietorship, LLC, etc.) and register your business with the appropriate authorities. Consult with a lawyer or accountant to ensure compliance with legal requirements.

4. Build your ecommerce website: Allocate a portion of your savings to develop a professional and user-friendly website. Platforms like Shopify, WooCommerce, or BigCommerce offer easy-to-use templates and tools to set up your online store. Consider hiring a web developer/designer for a more customized approach.

5. Source products: Decide whether you want to sell your own products or opt for dropshipping, where you partner with suppliers who handle inventory and shipping. Research potential suppliers, negotiate favorable terms, and maintain good relationships to ensure reliable product sourcing.

6. Invest in marketing: Allocate a significant portion of your savings to marketing efforts. Consider a mix of digital marketing strategies such as search engine optimization (SEO), pay-per-click (PPC) advertising, social media marketing, influencer collaborations, and email marketing. Set aside a monthly budget for marketing expenses and track the return on investment (ROI) for each channel.

7. Optimize your website for conversions: Focus on user experience, site speed, mobile responsiveness, and intuitive navigation to enhance conversions. Implement product reviews, clear call-to-action buttons, and a secure checkout process to build trust and credibility with your customers.

8. Establish a fulfillment process: Determine how you will handle order fulfillment, shipping, and customer service. You can choose to fulfill orders in-house or outsource to third-party logistics (3PL) providers. Ensure efficient inventory management and implement a customer-centric returns and exchange policy.

9. Monitor and analyze performance: Use analytics tools like Google Analytics to track website traffic, user behavior, and sales performance. Regularly review key metrics, identify areas for improvement, and adapt your strategies accordingly.

10. Scale and expand: As your business grows, reinvest profits into expanding your product range, improving customer service, and exploring new marketing channels. Continuously assess market trends and customer feedback to stay ahead of the competition.

While there may not be specific guides tailored to starting an ecommerce business with a significant amount of savings, the general principles and steps outlined above can be applied to any ecommerce venture. Additionally, consider reading books like "The E-Myth Revisited" by Michael E. Gerber or "The Lean Startup" by Eric Ries for further guidance on entrepreneurship and business development.