I. Start generating traffic to your Shopify store using free traffic sources:
Create discount codes for your store that you can promote on social media. Users can redeem them on your Shopify store in exchange for an email signup or answering a survey — useful for lead generation.
Market to your personal social networks. Put a link to your store on your social media profiles and share it with your friends/followers.
Join online communities relevant to your niche on platforms like Reddit, Facebook Groups, and Quora. Engage users (share useful information, ask questions, answer questions, comment, etc.) before posting promotional content.
II. Start using paid traffic sources for more "targeted" traffic
Facebook ads — good for niche stores that would benefit from exposure to a very specific audience (gender, age, job, marital status, interest, etc.).
Instagram ads — tends to work well for promoting products with strong visuals (fashion, food, fitness products, etc.).
Pinterest — frequented by female users; a good platform for promoting products that cater to a female audience.
Google ads — the dominant search engine where most people look for information on products or services. You can run ads using high search volume, low competition keywords.
III. Outreach and Partnerships
Submit guest posts to popular online publications like HubSpot, Mashable, and LifeHack. Most of these publications allow you to put a link to your store under your author bio.
Offer product samples to bloggers/vloggers in exchange for a review and a link promoting your Shopify store.
Build partnerships with other brands and engage in collaborative efforts that would allow both parties to tap into each other's audience base.
Gift products to influencers or work out a fee in exchange for a promotional feed/post for your store.
IV. Review and Optimize
Take the time to review and analyze the results of your marketing effort to figure out which strategies are working/not working for your store. For this, you'll need to set up a web analysis tool on your Shopify stores like Google Analytics, Hotjar, and Optimizely.
Use these tools to identify bottlenecks in your store that might be interfering with conversions and make changes as necessary.
A high bounce rate (people clicking away from your store) might suggest that your traffic quality is low (not that relevant to your niche) or problems with page loading speeds (need optimization).
No sales but a lot of abandoned carts would suggest that your shipping fee might be too expensive or unclear to customers.
Visitors are not adding products to their cart might suggest that you are not using the right marketing channels to promote your store.