How can a physical therapist manage a nonprofit online store?

I’m a Physical Therapist. I lost my wife to Breast Cancer. I started a nonprofit in her memory. In order to raise funds I created a store on Shopify. I really want to learn how to operate it fully myself. I’m so tired of paying others for nothing. I’m not too computer literate but dedicated. Can this platform assist?

@Kentobegin Hope you are doing well.

Could you please share what guide you are in need of?