New Sketch
Start a new sketch (S) and select a sketch plane.
- 
                On the Sketch ribbon, select the New Sketch tool.

 - 
                Select a face or plane as the sketch plane. A sketch plane can be a global
                    plane, a user-created construction plane, or a planar face of an existing
                    part.
                By default, the view is rotated along the sketch normal.Tip: If you don’t want the view to be rotated along the sketch normal, you can do one of the following:
- Press Shift+S while selecting the sketch plane.
 - From the File menu, select the Preferences button. Under Sketching, turn off View Along Sketch Normal, then click OK.
 
 
Note: To create a sketch on a reference or global plane:
        - Right-click the reference or global plane.
 - From the context menu, select Create Sketch.