A Greek-English Lexicon
If you want to read the original Homer, you absolutely need to have a real-good dictionary beside you. What is the best one among so many version of English-Greek dictionary? So many choices! But this one is the best dictionary I have ever had! Liddell's "A Greek-English lexicon" of Oxford University Press contains Ionian and Doric spelling other than Attic dialect, and epic form as well. Moreover, it shows us kindly the forms of irregular declensions and conjugations. Of course, besides Ilias and Odysseia, you can read New Testament without buying specialized dictionary for it. Surely other ancient Greek authors like Platon. The only one problem is its price. But it is sure that you will be paid back by its high utility. It will surely be a rewarding investiment for your study in classical litterature. Ranged from Pros to debutants.
Webster's New World College Dictionary
~This brand-new version of Webster's New World Dictionary contains the sufficient amount of vocabulary as well as a host of charts and photos, so it is quite useful not only as a mere dictionary but also as a reference to the cultural knowledge of the English-speaking world. Moreover, I was impressed by its coverage of definitions including highly technical ones such as "moment" which is roughly synonymous with "motivation" in the field of philosophy. If you are a translater, a technical~~ writer or any other language specialist, you cannot dispence with this type of reference. The only drawback may be the general lack of information in usage and connotation, though it contains quite a little comparing to other dictionaries designed for native or proficient speakers. Perhaps even proficient speakers need some dictionary designed for overseas students such as COBUILD or LONGMAN to supplement this dictionary and choose which to consult case by case.~