Before You Start
The first thing you should do before opening a Niche Store, is deciding what niche your website will be focused on. You can choose to have a store that sells one type of product or, keep your website have a s ingle design theme on a host of different products. Depending on the network of people you know, this can be a big difference and ultimately affect your chances of making sales.
For example, if you are part of a local runners club, you will have contacts with people who enjoy running and doing exercise and even possibly healthy eating/dieting etc. These could all be potential niches that your website could be related to.
How To Setup Niche Stores
If you do not have a domain
How To Change the Template
How To Add Designs To My Niche Store