to control confusing bad, not even the answers the exam questions safe

Thus, since there clearly better learning systems for the exam questions - here you is not even with the correction in single issues safely.
Confusing control. Why can not click from the practice questions out to the appropriate subject area for future reference ??
Insufficient interaction, too little videos.
If you have the video and photos looked through, it remains a confusing text. Since there are clearly better learning books.

The Good Name bladder ends here in a disappointment