You won't 'feel' very different when you enter the accelerative learning state since you do it naturally all the time. It's just being feeling relaxed. Free from worry and comfortable. The younger you are the easier it is for you to be relaxed so it hard to tell any real difference. Round about the ages of 16 to 17 you notice more tension in your body and then you notice that there is some difference when you enter the accelerative learning state.
So if you feel calm and relaxed like you could if you were lying back in a nice warm bath you're in accelerative learning state. If you feel like you're being chase by some crazy person with a wooden stick... you're tense and away from the accelerative learning state.
Alex