Magnetic Lasso Tool

How To Use The Magnetic Lasso Tool: 

First, drag the mouse and click "File" and "Open". Then, select a picture which you want to play with the magnetic lasso tool.

After selecting a picture, drag the mouse to the Lasso Tool which is below the Rectangular Marquee Tool. The, press right click and click the Magnetic Lasso Tool.

After selecting the Magnetic Lasso Tool, press the mouse and drag around the picture which you want to crop it until you managed to meet back the point where you begin. Then, it will form a shape.

Drag the mouse to "New" to create a new page.

Click the picture which you have cropped by using The Move Tool. Then, use the mouse and drag the picture to the new page which you have created just now.

When you drag the cropped picture to the new page, it will automatically create a new layer. This is the way of how to use the Magnetic Lasso Tool to crop a picture.