Follow Me seemed to be a bit of a weird tool, I never was quite sure what I was going to get. I think I get it now, and it's awesome for adding profiles around things. One of the places it excels is in figuring out how to do corners, so you're not spending lots of time manually mitering a corner.
So there's two ways to make friends with "Follow me", selecting line by line and selecting all at once. Selecting all at once is my preferred method, it almost always seems to work.
First, draw your profile on one of the lines you'll be extruding on. It should be a single face and make contact with the line. It should be perpendicular to the line.
For the "line by line" method, select the follow me tool and select the face to extrude, then move it to select the line you want to extrude on. Carefully navigate to the next line and keep going until your extrusion is done.
For the "all at once" method, select the lines you want to extrude on, then select the follow me tool, and finally click the face you want to extrude. It will then extrude along that path.
Note: Your face and the lines you select must be on the same component. If you draw a face outside a component and try to extrude along the lines of a component it will not work.
Later we'll talk about layers... Can you believe such a powerful tool had documentation that said "don't use layers and be happy?"
Puckdropper