Most people think that the journey of starting an online store first starts when they sign up for Shopify. But successful online stores take a few earlier steps to help them achieve long-term success. The idea stage isn’t simply about having an idea and executing on it, it’s about building a foundation. Here are a few ideas for your ecommerce checklist:

A Web analytics program tells you how shoppers are using your site. It reveals where users come from, what pages they visit and what keyword searches brought them to the site. An analytics package enables merchants to calculate their conversion rate. (Your “conversion rate” is the percentage of your visitors who make a purchase — a critical fact to know and track over time.)
Google Sheets beat Microsoft to the punch and introduced a Checkbox as one of the Data Validation options. You can go to Insert > Checkbox to quickly create one, and you can customize it by going to Data > Data Validation. I've updated most of the Google Sheets versions of my checklists to use that feature. I hope Excel gets smart and introduces a similar feature some day.
Your business plan lays it all out. It details what you sell and where your profit comes from; how much inventory you’ll have on hand and where you’ll store it. It lays out your return policy — and you’ll need one of those. Most important, your business plan details your total start-up cost, from your ad campaign to Web designer to monthly server fees.
Realize a couple of key facts: A) the prices for e-commerce software have fallen, so you don’t need to spend a fortune unless your needs are complicated, and B) many of today’s e-commerce packages include a full range of tools in one package, from an inventory management system to marketing tools. Many of today’s merchants prefer this “all-in-one” approach because it makes life simpler.
A checklist is a type of job aid used to reduce failure by compensating for potential limits of human memory and attention. It helps to ensure consistency and completeness in carrying out a task. A basic example is the "to do list". A more advanced checklist would be a schedule, which lays out tasks to be done according to time of day or other factors. A primary task in checklist is documentation of the task and auditing against the documentation.