go at it.
however, the authors recommend that you take your time. go at an easier pace and spend that much longer going through the program.
that way you will give yourself a better chance to fully absorb and understand all the information that in there. that way you will increase your own understanding of the course material fully before taking the examination.
having completed the purchase of the course, all of the training material can be downloaded from a special link provided for you. you are free to register any time after receipt of your downloaded material.
finally, you can get started as soon as you are ready to dive in!
the author is 