Business Website, Business email & Instagram page creation

Requiring a professional to complete a few jobs that I’ve tentatively started and don’t have the ‘know-how’ to complete. Business domain purchased through Hostinger. Website ‘started’ with Shopify. Need a business Instagram page created. Started process of creating a business email address but got lost along the way. Need the above set up/created with the end game of me being able to maintain them. Happy to answer any and all questions you have! This is definitely not my area of expertise and I need help please! My physical business is thriving however I need to get on top of the online side of things!