Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Of no use

If you want to learn basic Greek don't waste your time with this. There are no grammar explanations, but just some helter-skelter comments. You are not going to learn Greek, or any other language for that matter, without at least some systematic explanation of grammar. Don't be fooled by the Teach Yourself Beginner's series. They are not mcuh more than phrase books and will not prepare you for the situations you will encounter when conversing with natives. It is nuch better to go right to a self-study course which is more in-depth. This book trys to make lazy people think they are really going to learn something. If you want something fast and not so "in depth" get "Conversational Greek in 7 Days", it is much, much better.