How do I add the same nodes which are in a cube to a new mesh?

Hello, my name is Daniel. I am just getting started with blender.

I am having a problem where I want to connect a UV color grid thingy to the base color using nodes.
But, when I click on a new mesh, for example: an Ico Sphere. The nodes don’t appear. What I want to acheive is that the same nodes appear so I can connect the color grid to the base color.

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Click on new

Once you have the base texture on your first mesh…
Select the second mesh ( Icospere) …and use the Dropdown and select the Base texture, you added to the first mesh…

Make sure to click the NUMBER, to make it a single texture or when you edit it, it will change all of them…clicking the number will make them individually editable…

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