Build a shopify online store/website

I am just starting out a tshirt, stationary, sticker, etc online store. This is a family business of myself and my teen, where our design focus is on disability, LGBTQ inclusion and acceptance. We currently have or are working on a small (less than 10 items) right now, but plan to expand quickly into more products. This is a home based business, and also plan to do sales at pop up shows and craft fairs. This is all relatively new for me, so need someone with awesome experience and patience. We already have a logo and a domain name...my husband is working on setting up our email hosting (although he can wait to do that if you have recommendations). Also, learning about "mockups" for products, so interested in learning more about that (but that service is not a requirement). I have run my own Contract Interior Design business for the past 20 years, but I didn't offer online sales, so my website was more static/portfolio based. Thanks for considering our project. ~Valerie, owner of RainBee Designs