Draw with the Pen tool

Select the Pen (P) tool.

Click anywhere on the canvas to set the anchor point.

Move the pointer and click again to draw a line. Press Shift as you click to draw a straight line.

Select the Pen (P) tool.

Drag on the canvas and release to create direction handles for the anchor point.

Drag again to set the slope of the curve segment, and then release.

To add an anchor point and adjust the handles, select anywhere on the path using the Pen tool when the pointer shows the icon.