when you try selecting it and it flashes pink, then grey again, did you try and move it? Sometimes it doesn’t show over the top of other things. The tut seems to explain the rest pretty well.
For the spike object (In object mode; NOT edit mode):
Switch to the Edit Buttons Window [F9], and in the left most column, below ‘Draw Extra’, activate the ‘Axis’ option.
Note which direction the positive Y axis is situated with respect to your spike object.
Make sure the 3d cursor is located in the middle of the base of your spike, and then activate the ‘Rotate with respect to the 3d cursor’ icon in the 3D Window header, (or simply press the [ . ] period key on your keyboard; note: once you are done, press the main keyboard’s [ , ] comma key to return to the default mode for rotation/scaling).
Tab into edit mode and then, in the appropriate view, rotate the spike’s vertices so that the tip points to the object’s positive Y axis.