Are those "sections" you're referring to the actual Collections? If yes this is already built-in:
yourdomain.com/collections/all should get you to that page, let me know if that's what you need!
Thanks for the reply, and that solution would work however I missed a key point out.
I have 2 sets of 'collections' for my store. One section where I have trade items and one section where I have retail items. If I did that, I'd have trade and retail items all on display which I don't want. I should have mentioned that before!
I would create two collections. One for trade items and retail items. Then, on your landing page, create a collection list section and show those collections. You can create a landing page that only provides few options for the visitor to click. Check this tutorial https://made4uo.com/blogs/journey-to-awesome-shopify-website/create-a-landing-page-without-and-app-o...
Other option is to have a clickable image and direct it to part of your store or a website. Check this easy tutorial https://made4uo.com/blogs/journey-to-awesome-shopify-website/add-a-customizable-clickable-image-sect.... It is customizable.