For an Informed Love of God
The basics of how you do Greek word studies
If you want to go further into word studies, then here are my recommendations.
A Greek-English Lexicon of the New Testament and other Early Christian Literature (BDAG)
New International Dictionary of New Testament Theology: Abridged (1 volume)
Theological Dictionary of the New Testament (1 volume)
For advanced studies
New International Dictionary of New Testament Theology and Exegesis (5 volumes)