This is my first time posting anything anywhere and I'm completely ignorant of the protocals.  I am currently in the SolidWorks 2010 student version tutorial "Building Models (Advanced Design), Which involves making a hinge, then checking for collisions.  Every thing was fine until I tried to insert a new part into the assembly.  The next step was to build a pin referenced to the hinge assembly. The tutorial directed me to select "New Component" then click on the edge face of the hinge, at which time a new sketch would open on that face, which it did. The problem was that there were no sketch tools in the tool bar (including the Sketch icon) and all attempts to access sketch tools have ended at a brick wall.  I can't even close the sketch (no sketch icon).  What have I missed, and what do I do???