Question 6. How can I best customize the overall look of my online store?

In most cases, if your company already has a website, your ecommerce site should reflect your existing online look, including your logos and color schemes. If you don't have a business website, choose background and accent colors for your ecommerce site that complement your logo.

Most design templates from ecommerce vendors come with preset theme settings that don't require HTML or CSS knowledge to customize. So, it should be relatively easy to upload your logo and product images and add banners, slideshows and more.