How to set up a small business

I am working on setting up a small business, which includes a retail outlet selling multiple brands in the kitchenware industry.

I plan to set up a retail outlet, sell on online marketplaces, create a community on social media and ultimately also sell via my own website.

Can someone more seasoned please give advice

• On the order in which I should focus on these tasks?
• How to set up a custom business email or if I even need one?
• Best budget email providers
• Best budget domain name and hosting services
• How to create a brand in this segment where there's no product of my own
• Any additional tips or advice suited to this problem