immanuel kant

For a while I have doubted any psychic or paranormal phenomenon, always finding a rational "logical" explanation for the events instead. But lately I have been finding way too many events that seem unexplainable by conventional scientific logic. Here is one in particular that I find fascinating...

Could someone open up a few of the main points that Kant raises in his Critique of Pure Reason? I guess I need a bit of a push to start reading it finally. Which chapters would you recommend and why? What kind of challenges would his ideas give to a modern day skeptic such as many on this...