You can search by grade, subject, or resource type. You will just have to decide what option would be the easiest for you to find what you're looking for.
For the sake of exploring, I am just going to search by grade. To do that, you don't have to change anything, you just:
1. Scroll until you find your grade and click on it.
2. That will take you to grade specific templates and you can scroll through, or use the filters offered to shrink your search.
3. Click on the lesson or template that you want to use.
a.) If it's a template you just have to click "Customize this template" and it will make a copy for you that is yours. You can make changes if you want, or use it as is.
b.) If it is a lesson you will do the same thing, but you will have to click "Use this lesson" instead.
Here is a video that shows how to navigate and what it will look like.