Filtering posts can help you create better resources for visitors. Instead of having your blog posts spread out about a certain topic, you can filter through them with a categories tag.
First, you want to start off by writing the HTML/Liquid code it looks something like this:
{% for post in site.posts %}
{% if post.categories contains 'race-cars' %}
<div class="blog-posts">
<a href="{{ post.url | absolute_url }}">
<h2>{{post.title}}</h3>
</a>
</div>
{% endif %}
{% endfor %}
In order to make this work, you’re going to have to assign add the categories tag in your front matter at the top of each post
---
title: K24 Honda Civic
description: A little race car with a nice swap
categories: race-cars
---
For me this took way too long to learn, I spent hours trying to figure this out only to one day realize how easy it was.