Custom section not showing in the Shopify theme editor? Here's the fix
You uploaded the section, the file saved, and it isn't in the "Add section" list. Almost every case comes down to one of nine causes. Work through them in order.
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Guides for Shopify builders
Step-by-step walkthroughs for building, installing and fixing Shopify sections.
How to add blocks to a Shopify section
Blocks are what let a merchant add, remove and reorder the pieces of a section without touching code. Here is how to define them, render them and make the theme editor treat them properly.
How to make a Shopify section editable in the theme editor
If changing a word on your store means opening the code, the section isn't finished. This guide shows how to move every word, image and colour into settings the merchant can edit.