Resource 1: CSS Tricks
The first resource for the CSS Grid is CSS Tricks. Much like their CSS Flex guide, their guide on the Grid is a great explanation, and due to them moving both parent containers (Grid Containers in this case) on the left-hand side, and child objects (Grid Items) on the right hand side parallel with each other, it makes it incredibly easy to read and follow along with.
Resource 2: W3schools
W3schools, unlike their initial guide to flex, has a much broader explanation for Grid. The examples they give are easy to follow along, and they go through each part of the grid, step by step, going from column to row to the gaps in-between. They also explain grid lines, and have a full list of properties involved in the Grid at the bottom.
Resource 3: MDN Web Docs
The third and final example for CSS Grid resources is MDN Web Docs. Surprisingly, they have the most concise guide of the three, a departure from their usually extensive guides on the majority of CSS Rules and properties. The guide isn't bad, it's just shorter than usual. They explain the basic layout of a grid, with examples in HTML, CSS, and picture format. They also have a vast number of links to the various properties involved in Grid, which is likely where the meat and bones of their discussion on the topic is given.
Summary
In summary, we talked about three resources that can help us with learning CSS Grid. We talked about CSS Tricks, with their usual parallel spacing of parent and child containers/objects to help us see how everything works at once. We talked about W3schools, and their fairly extensive intro to a CSS Guide, with heavy use of pictures. And finally, we talked about MDN Web Docs, which gave us a surprisingly short introduction to a css guide.