JM, we really appreciate your enthusiasm, but it's become very clear recently, and especially in the last sentences you've posted, that you've been going 'way too fast. You haven't really given yourself a chance to absorb the grammar from past lessons, to understand the grammar of the new lessons, or — even more importantly — to memorize the different endings that change the person, tense and mood of verbs, the number and case of nouns, etc.
I'd strongly suggest that you start over, maybe ten or even twenty lessons back, and go slowly enough to give yourself a chance to really learn Greek. Are you in a big hurry to do so? Let us know what keeps up your enthusiasm, and maybe we can come up with some extra guidelines! (-: