Bible Gateway
This online bible library contains a number of different translations, as well as bible commentaries and other resources. http://www.biblegateway.com/passage/e-Sword
Free downloadable Bible Study software including many out of copywrite books. Very useful for searching and can be used without an internet connection. http://www.e-sword.net/
CrossWalk
Useful site with many resources for Bible Study, but far too many adverts.http://bible.crosswalk.com/
NT Gateway
Award winning web directory of internet resources on the New Testament, currently being updated daily. Browse or search annotated links on everything from the Greek New Testament to Jesus in Film. http://www.ntgateway.com/
Christianity Today
Excellent (if slightly USA focused) magazine. Lots of good articles many available for free and searchable archives. Too many advertisements. http://www.christianitytoday.com/