1.)gradient tool:the tool that looks like a square but is shaded to the right and faded on the left. It is on the right side.
pen tool: A tool that looks like a pen. It is on the left side.
shape tool: the other square but is a solid color, and is three spaces below the gradient tool.
2.) The gradient looks black on the bottom and gets lighter towards the top.
3.) To do this, you click on the icon second from the left on the top bar it looks like an image similar to what your gradient would look like, and change the setting to the option second from the left that looks pink and squares on your right. change your color in the color palette, and then click and drag to make your gradient.
4.) Vector Art
5.) No
6.) select the shape tool (the one towards the bottom right that looks like a rectangle), the rectangle is going to be black.
7.) right click the rectangle tool button and click in the Ellipse tool and that will make a circle.
8.) 72 dpi
9.) dots per inch
10.) They will print the same size (untitled-1) the only difference is that B is magnified so B just appears larger.
bonus: pixels per inch