ETSY Research & Strategy

I am very new to this "ETSY" and looking for some Research and Strategy before I Jump in feet first!

I do a lot of Graphics work and Digital Artwork so looking to sell on here (Family Portraits, Animal drawings, menus, business cards, etc - Anything graphics reallly!!)

Very interested in the most popular products, personalised images for Birthdays, weddings, gifts etc.

Also once I design products i will aim towards, I need advice on creating a shop, products etc with the correct marketing.