The half life has been reported to be very long so timing is not as much of an issue. That said, I would consider taking it with your pre workout meal or with your first meal of the day on non training days. This was effective for me but I don't know if it's more effective than any other way.
My logic was:
Pre workout because your muscles will be pumping with blood about the time it hits your system. This allow for the substance to be very effectively pumped through out your body. It may have been a placebo effect, but it gave me a nice mental and physical boost in the gym regardless ;-)
First meal of the day on non training days because your body has been fasting and will be ready to soak up whatever you throw down your mouth.
Just my 2 cents...Good luck!
Oh, and welcome to the board ;-)