This video will show you how to create Curved Text. We will also cover Text to Shape.
You have to first convert the font to shapes.
You can do this by creating another small shape set to the same depth, like a square or circle:
Then move it so that it fits entirely inside your text, like this:
Then, you will want to select both, and go to Edit > Combine:
This converts the font to a shape, so you will no longer be able to edit what the text says. It does reduce the size of the blue box:
You can create the effect of circular text using an app called "Path Warp".