Just press on the click pen and you may feel something and because of reflex you may throw it so tape it to your hand and it may not work as a regular pen you may have to slide it near the tip.
you either twist the top, click the top or take of a cap. if its just not working properly just scribble it on a piece of paper a couple of times and if that doesn't work throw it away and get a new...
Well the pen is your mom and your mom gave you birth so that's maens your part pen to find your doddle and try to make ink go out of it. That is how the pen works