Samuel
To the other review that complains about the not possible to be worked on workbook, read the play store books guideline. Also, fix that one star - the quality of the book should be the main focus of your review, not some stupid mild inconveniences.
Caramel Macchiato
Was hoping I could print only the pages I need to save paper and use it like a WORKBOOK, but DRM protected prevents the function of the book. TTMIK shouldn't have made it an e-book in the first place. Pointless having a workbook you can't work on comfortably. Well I can't refund it now and I goofed and I'm unhappy.
ศราวุธ นันธิษา
A thoroughly enjoyable read from start to finish.