One resource is at MyStudyBible.com. This is the electronic version of the HCSB Study Bible and includes additional commentaries, dictionaries and word studies. Mouse over the text of the HCSB Study Bible and you will get the Greek/Hebrew meaning for the word.
Another is Biblia.com; and it is built off the excellent LOGOS Bible Study platform. You can sign in for a free account and gain access to the ESV Bible and a selection of commentaries, books and other resources.
Enjoy digging into God's Word!
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Grace and Peace
Ollie
Sep 2010