chore: improve contributing guidelines

.distignore

@@ -86,3 +86,4 @@ SETUP.md
 DEVELOPMENT.md
 TESTING.md
 tsconfig.json
+docs/*

CONTRIBUTING.md

@@ -125,6 +125,8 @@ This document describes the high level workflow used when working on a WordPress
 
 You're free to use your preferred IDE and Git client. We recommend PHPStorm or Visual Studio Code, and GitHub CLI.
 
+For specific FAQ about working with this WordPress Theme refer to the [FAQ](./docs/FAQ.md) section.
+
 ## Prerequisites
 
 If you haven't yet set up your local development environment with a WordPress Plugin repository installed, refer to the [Setup Guide](#setup-guide).

docs/FAQ.md

@@ -0,0 +1,59 @@
+## FAQ
+
+### Text translations and localization. What rules should I follow?
+
+We aim to keep the translation as close to 100% as possible. To achieve this, we need to follow some rules:
+
+- All user facing text should be translatable, using the `__()` function.
+- Before adding a new string to the code, check if it's already available in the theme. If it is, use the existing string.
+    Adding a new string will require a new translation. So, if you can avoid it, do it.
+- If you need to add a new string, make sure to add a context to it. This will help translators to understand the
+	context of the string and translate it accordingly.
+- For the theme all the new added string  will require approval from the reviewer before merging.
+- When removing a string, instead of deleting it you can move it to `get_strings()` function from `inc/core/front_end.php` 
+    so that the translation is kept for the future.
+
+### Compatibilities. How to add a new compatibility for a plugin?
+For writing and fixing compatibilities with 3rd party plugins we have a special location under `inc/compatibility`
+If there is already a file for the plugin you are working on, please add your code there. If not, create a new file 
+following the same naming convention.
+`inc/compatibility/plugin_name.php`. The class name should be `Plugin_Name`
+After that make sure you register the compatibility class in `inc/core/core_loader.php` file inside the `define_modules()` method.
+
+When writing the class, please make sure you only load the compatibility code when the plugin is active. 
+You can do that by using `should_load()` function, where you define the logic for checking if the plugin is active or 
+not and/or if the compatibility code should be loaded or not.
+
+The class requires to have a `init()` method that is the entry point for the class. Ussually here you will use the 
+`should_load()` to check if further execution is needed or not.
+
+
+### CSS and JS. How to add new CSS and JS code?
+
+We currently use the following limits for CSS and JS:
+
+| File                               | Type | Limit  |
+|------------------------------------|------|--------|
+| assets/js/build/modern/frontend.js | JS   | 7KB    |
+| assets/js/build/modern/shop.js     | JS   | 33KB   |
+| style-main-new.min.css             | CSS  | 38.1KB |
+
+The limits are for the minified files. These are compiled automatically when you run `npm run build` command.
+You can check the size of the files by running `npm run size` command.
+
+If you need to add new CSS or JS code, please make sure you follow the limits. If you need to add more code, you can 
+follow the steps below:
+
+1. Check if the code is required as part of the core functionality. If it is, you can add it to the core files.
+    - If you go over the limits, you can try to optimize the code.
+    - Another option if no further optimization is possible is to remove some of the existing code that might not be 
+      needed anymore.
+2. Check if the code can be moved to a separate file. If it can, move it to a separate file and load it conditionally. Or 
+   load it only on the pages where it's needed inline.
+
+#### CSS
+For CSS we use `.scss` files. The files are located under a `assets/scss` folder. The main file is `style.scss`.
+
+#### JS
+For JS we use `.js` files or `.tsx`. We encourage the use of `.tsx` files as they allow us to use TypeScript. This should be
+respected especially for new code.