The Path Tool will be the hardest tool to learn in Illustrator. It usually take weeks to learn and beginners always end up in frustration while figuring how it works. So don’t give up and practice it every day and soon you will be able to draw any shape.
Select the Pen Tool and click once to add the first anchor point. Move your mouse to the next position and click again to create the second point. The two anchor points will be connected together. Continue doing this to create a W shape as shown.To draw a new line, click the Selection Tool(The Black Arrow Icon) and click back the Pen Tool again.
To close a path, click back the starting point to close the shape.
Click and drag to put out the handles to create a smooth anchor point.
Click and drag to create a smooth anchor point. Without releasing your mouse, hold Alt/Option and drag the handle up to change the path direction.
Click and drag to create a smooth anchor point. Continue adding points and click back the starting point to close the path.
With the Pen Tool selected, go near the path where you want to add a new anchor point. A plus sign will appear next to the pen, click on the path to create a new anchor point.
To remove point, move your Pen Tool close to an anchor. A minus sign will appear next to the pen. Click on the anchor point to delete it.
To convert a smooth anchor point to a sharp anchor point, move your Pen Tool near the anchor and hold Alt/Option and your Pen Tool will change to an arrow shape. Click on the smooth anchor to convert it to an anchor point. Click and drag on the anchor point again to change it back to a smooth anchor point.
Select the Direct Selection Tool and click and on anchor you want to move. Click and drag to change positions.
With the Pen Tool, you can quickly change the anchor directions. Hold Ctrl/Command to quickly change the Pen Tool to Direction Selection Tool. Select the anchor point you want to edit. The anchor handle will appear. Now release Ctrl/Command and hold Alt/Option to change it to Convert Anchor Tool. Click and drag the handles to change the direction.
After learning the concepts of how the Pen Tool works, we will apply what you have learnt to create this ancient old key shape. For the right angles, hold Shift before adding anchor point to constrain it to 90-degree.
This is the final illustration.
Tips for Using Pen Tool
I have included more exercises for tracing using Pen Tool. Save it to your desktop and place it in illustrator by going to File>Place. Select the image and make sure Template is ticked. The image will now be faded and placed as a template. Now you can start practicing and don’t give up.
For a more comprehensive guide on using Pen, read this article.