You can start this business with any level of investment. The better option is to rent a small shop to connect with publishers to keep and maintain book stocks. To start with have 200 to 250 books as a stock at your store. To grow your business quicker it is better to have 500 to 1000 books as a stock. From just reading, collecting and discussing about your book business you should be aware of some popular online book selling organizations bibliophilegroup.com, bookweb.org, ioba.org and biblio.com/bookstores.
It should have a general business plan about how to start an online book store. To set up your online bookstore find a perfect business name or domain name. For assistance, refer websites like instantdomainsearch.com, godaddy.com, whois.net and more. Acquire business license with the help of a local Chartered Accountant. Own a website for starting and selling your books online.
Get a good payment gateway with basic transaction charges like Paytm and CCAvenue. Select a logistics company for shipping your products like Bluedart, FedEx and more. Find your perfect suppliers and distributors for your books such as ubspd.com and ibhworld.com.