For a full introductory course in Biblical Greek for an adult, a college student, or a gifted late high school student, Basics of Greek Grammar by Mounce is a good resource. In addition, a minimum the following would be helpful:
For reviews of Greek curricula, please visit HomeschoolChristian.com's reviews:
Review of Basics of Biblical Greek Grammar
Review of Biblical Greek Survival Kit
Review of A Greek Alphabetarion
Review of Basic Greek in 30 Minutes a Day
Review of Greek Hupogrammon
Review of Hey Andrew! Teach Me Some Greek!
Review of Learn New Testament Greek
Review of Mastering New Testament Greek
Review of At Home with Hebrew
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