To draw a rectangle with the Rectangle tool, follow these steps:
1.Select the Rectangle tool from the toolbar or press the R key. The cursor changes to a pencil with a rectangle.
2.Click to set the first corner point of the rectangle. To align the plane of your rectangle with a specific drawing axis or other geometry, hold down the arrow key that corresponds your desired alignment, as explained later in this section.
3.Move the cursor diagonally to find the desired size and shape for your rectangle.
4.Click again to set the second corner point of the rectangle. Your shape appears with a face, as shown in the following figure.
Here is a video about the push up/ down tool.
Here is a video that shows you how to use the navigation tools.
Here are 3 steps that shows you how to use the pencil: First you select the pencil tool or press the L key, then you click to set the starting point of your line. If you click the wrong place, press the (Esc) key to start over, after that click to set the line’s end point. This end point can also be the starting point of another line.
Here are 2 steps to erase: First of all you select the erase tool, then you click on the line that you want to erase and press on it. Your line will be erased.
For moving objects follow these steps: Click, move, and click. Don't drag your mouse. Just like using the Line tool, try to avoid the temptation to use the Move tool by clicking and dragging with your mouse; doing so makes things a lot harder.