MacGregor Ministries:

http://64.33.47.165/jehovahs_witnesses/jehovah_witness_index.html

Apologetics Index:

http://www.apologeticsindex.org/t10.html

The Watchman:

http://www.watchman.org/jw/index.htm

CARM:

http://www.carm.org/witnesses.htm

            And particularly, the CARM discussion forum:

            http://www.christiandiscussionforums.org/v/forumdisplay.php?f=28

Watchers of the Watchtower World:

http://www.freeminds.org/

AOMIN:

http://www.aomin.org/Witnesses.html

Let Us Reason:

http://www.letusreason.org/JWdir.htm

CR&E:

http://www.jude3.net/JWIDX.HTM

JW Files:

http://www.jwfiles.com/index.htm

Contra Sites (pro WTBTS):

WTBTS homepage:

http://www.watchtower.org

Greg Stafford (Elihu Books/Media):

http://www.elihubooks.com/

In Defense of the NWT:

http://mysite.wanadoo-members.co.uk/newworldtranslation/pageindex.htm

Jehovah’s Witnesses United:

http://www.jehovah.to/exe/index.htm

Journals

The American Journal of Biblical Theology:

http://www.biblicaltheology.com/

Biblica:

http://www.bsw.org/project/biblica/

Detroit Baptist Seminary Journal:

http://www.dbts.edu/journals/

Journal of the Grace Evangelical Society:

http://www.faithalone.org/journal/index.html

Kerux:

http://www.kerux.com/search/searchtype.asp

TC: A Journal of Textual Criticism

http://rosetta.reltech.org/TC/TC.html

Master’s Seminary Journal:

http://www.tms.edu/journal.asp

Theology Today:

http://theologytoday.ptsem.edu/

Recommended Print Resources

I am a book hound. Very little pleases me more than a new reference book, except perhaps two new reference books. J But the following books have been most helpful to me.

WTBTS-specific

ANYTHING by Rob Bowman, particularly Why You Should Believe in the Trinity and Jehovah’s Witnesses, Jesus Christ and the Gospel of John. Out of print, but I found my copies at Amazon marketplace.

Rhodes, Ron, Reasoning from the Scriptures with the Jehovah’s Witnesses. 1993.

Martin, Walter. Kingdom of the Cults.

Any WTBTS books, but particularly: New World Translation with References (1984), Kingdom Interlinear Translation of the GREEK SCRIPTURES (KIT, 1985), KNOWLEDGE that Leads to Everlasting Life (1995), Insight on the Scriptures (2 Volumes, 1988), Reasoning from the Scriptures (1985). Booklets: Should You Believe in the Trinity?, The Divine Name that Endures Forever. If you can’t get these from a JW or a local Kingdom Hall, you can find a tons of old WTBTS books and materials on Ebay.

General

I could go on forever, but here's my list of favorites and those I refer to often:

Grudem, Wayne. Systematic Theology. 1994. (There are other systematic theology texts, of course. I just happen to like this one.)

Strong, James. Strong’s Exhaustive Concordance of the Bible. 1890

Brown, Francis and Briggs, C. and Driver, S. Brown-Driver-Briggs Hebrew and English Lexicon. Reprint 1996.

Thayer, Joseph H. Thayer’s Greek-English Lexicon of the New Testament. 1896.

Vine, W.E. Vine’s Complete Expository Dictionary of Old and New Testament Words. 1966.

E.W. Bullinger, Figures of Speech Used in the Bible Explained and Illustrated. 1968.

Morey, Robert Dr. The Trinity: Evidence & Issues. 1996.

Carl Olof Jonsson. The Gentile Times Reconsidered (Fourth Ed.). 2004. 

Hurtado, Larry W., Lord Jesus Christ: Devotion to Jesus in Earliest Christianity, 2003.

And more recently:

Jesus as God: The New Testament Use of Theos in Reference to Jesus by Murray J. Harris. If you can't read Greek on at least a rudimentary level, this book is not for you, but although I don't agree with Harris' conclusions in every instance, his study is the definitive work on the subject, IMO. Good luck finding a copy - finding mine was a 3-year labor of love, LOL.

Also,

The Earliest Christian Artifacts: Manuscripts and Christian Origins by Larry Hurtado. His work on the nomina sacra is outstanding, but his study of the staurogram only marginally less so. For scholastic excellence, Hurtado never disappoints.

I also personally use the KJV, NIV and NASB in every Bible study I undertake, but any and all Bible translations/versions you can get your hands on are great for comparison purposes. But then, collecting rare and/or odd Bibles is becoming a hobby of mine… J