Reddit reviews Greek for the Rest of Us: Using Greek Tools Without Mastering Biblical Languages

Aramaic was the spoken language in the Middle East, as was Greek and Latin. Hebrew was the written language of the Old Testament (Masoretic Text). Greek was the accepted written language of the Old and New Testaments (Septuagint).

If you would like to learn Classical Greek, I recommend Greek for the Rest of Us by William D. Mounce. He also has free resources available online.

Visual Greek. Learn using cartoons!!!! A similar method is Greek To Me. Again, learn using cartoons! I've read most of the book and it was a HUGE help. Also, both are Koine, and the visual greek method uses Mounce's book, which is THE standard intro. Mounce also wrote an easier intro for people who just want to know enough to do basic bible studies and use some of the better Greek tools out there, it's called Greek for the rest of us. Other books that take it easy on you are Learn Biblical Greek by John Dobson and English Grammar to Ace New Testament Greek. If you're wondering "Why grammar?" it is because you need to know how grammar works. If you know how it works in your language, you'll have a better grasp of grammar in other languages (at least you'll know what the books you read mean when they talk about active and passive verbs etc...).