Here is the tutorial.
Start SolidWorks in part mode.
Make this sketch.
Exit the sketch. Now click base flange/tab under sheet metal tab.
Select the sketch and click OK.
Now the base of the sheet metal has been generated.
Under sheet metal tab select Sketched bend.
Select the top face of the base.
Draw a line across which the bend has to be done.
Exit the sketch and select the fixed portion of the base.
Click OK and the bend is generated.