This is also how Crowley defined magick- is defined as "the science and art of causing change to occur in conformity with the will", including both "mundane" acts of will as well as ritual magic. Crowley claimed that "it is theoretically possible to cause in any object any change of which that object is capable by nature"
Crowley saw magick as the essential method for a person to reach true understanding of the self and to act according to one's True Will, which he saw as the reconciliation "between freewill and destiny."
Since the time of Crowley's writing about magick, many different spiritual and occult traditions have adopted the K spelling, but some have redefined what it means to some degree. For some modern occultists, it refers strictly to paranormal magic, which involves influencing events and physical phenomena by supernatural, mystical, or paranormal means.
Crowley provided some further statements about the nature of magick as he defined it (from the Introduction to Magick, Book 4):
"Every intentional (Willed) act is a Magickal act."
"Magick is the Science of understanding oneself and one's conditions. It is the Art of applying that understanding in action."
For Crowley, the practice of magick?-although it equally applies to mundane things, like balancing the checkbook?-is essentially to be used for attaining the Knowledge and Conversation of one's Holy Guardian Angel (which he believed was the first step necessary for spiritual attainment). Since achieving this state with one's "Silent Self" can be extremely arduous, magick can be used not only to reach that particular goal, but to clear the way for it as well.
Give thanks to wikipedia- http://en.wikipedia.org/wiki/Magick (the sources for this post are actually very good.)
There's your first lesson on what magick is Secret, now roll with it and start researching some of the basics.
basics: Visualization, understanding moon phases, who are the gods and goddesses, color, tools, energy flow and how to control it, how to write your own spells, how to make a spell work, why spells go wrong, grounding and centering, and shielding and circle casting, just to get you started.