Greek is one of the oldest living languages today and it is spoken by nearly 13 million people, principally in Greece and Cyprus. Greek isn’t a difficult language, but it follows a particular pricipal of writing that origins from Phoenician. If you are in need of tutorial or a tool for translating text, you can use this dictionary by EURODICT, that is completely free and you can download it from here
This is only a demo version, but all functions can be used. The only difference between the ful and the demo versions are that the full one has more words in its database.