With a different alphabet, Greek is never going to be the easiest language to learn. However, I am picking it up far quicker then I ever imagined I would and am even reading the greek script quite well. The combination of exercises and cut-out cards, backed up by the audio CD, keeps it fun and interesting and the CD is invaluable for pronunciation. I do find the lists of key words rather random at times (a list may contain the words for cupboard, car and mouse for example) and would ideally have liked a wider range of vocabulary grouped together by subject.
If you are looking for a structured language course this is not the book for you, but if you just want a simple and inexpensive introduction to Greek that will allow you to speak and read the basic language quite quickly, I would highly recommend this book.