Online Bible in several translations as well as study tools. The default is the NIV. Be sure to select the version you prefer to use.

Vine's Expository Dictionary of New Testament Words Use the links on the left. Most often you would probably need the English -> Greek link.

Thompson Chain Reference Study Bible (New American Standard version) Excellent Study Bible which links verses with similar subjects

Parallel Bible Allows the Bible Student to see how a verse or a portion of scripture is rendered in two different versions