At its core, Witchcraft is about understanding how things work in and leveraging that knowledge to be efficient in what one does.
For example, I happened to arrive several hours early to the airport today. Closer to my flight time, the lines at McCarran airport get very long indeed — especially on a Sunday. So I spent less time resting in the comfort of my hotel room, but I will now spend more time at the airport, my PC on a coveted AC adapter next to a boarding gate chair, instead of waiting in lines.
Sometimes the understanding is about more subtle aspects of how a thing works than others. For example, as I stood in line at the boarding gate to get my passes (of course I checked in online, which doesn’t get me out of this line but locks my seat in earlier than would otherwise be the case) the airline staff rushed several people through because their flight was about to leave. Of course, this meant a crowd at the security gate.
So rather than get in line for the gate at that point, I sat down in a restaurant for a cup of coffee. See, airlines tend to have their flights leave more or less at the same time, which means the size of the line sort of looks like a graph the absolute value of a sine wave. So how’d I do after my cup of coffee and that wave of flights took off?
5 minutes in line.
And now I’m tucked away with nothing to do but read my book, surf the web, etc. until my plane leaves in 2.5 hours. Which is as close to utter bliss as I get when I’m not in my wife’s company.
All that right there? That’s what Witchcraft is.
The rock-and-stick collection, the herbs, the incenses, the charts and charts and charts, all those incorporeal beings with which one interacts are simply still more subtle understandings of how things work.
Therefore, if you would be a Witch, always hunger to learn ALL THE THINGS.
 If you don’t have enough math to visualize that from those eight words, this is an opportunity to learn about them.