I don't think it really matters if you're in Alpha, and Theta, because both states can work pretty much just as well, and can be used for generally the same purposes. All states have to do with hertz, so unless you get some equipment that tells how many hertz your brain is operating on at any given time, you'll just have to rely on the tension you can feel in your body, and the alertness you may be aware of within your waking state.
-youngprer
geocities.com/doc5587