There are a number of good Bible study sites: they each have strong points.
Here are a few you might like to look at:
BibleHub.com has a wide range of helps, and is the only site we’ve found that has the 1977 version of the NASB (the Bible Ed usually preaches from)
BlueLetterBible.com has an large number of translations, and has easy to see Greek and Hebrew.
MyStudyBible.com allows several translations in parallel columns and has lots of helpful pop-ups.
BibleGateway.com lets you turn off the footnotes, etc, for easy copy and pasting of scripture.
BibleStudyTools.com is very customizable – signing up for account allows you to keep your notes online.
PreceptAustin.org has an excellent selection of maps and tools, easy to use word study
StudyLight.org nice search tool; use IE or Chrome to access (has problems with Firefox, Safari)
Purchasing Christian Books:
Christian Book Distributors – ChristianBook.com (large selection, discount prices)
and, of course, Amazon.com may have what you’re looking for at a reduced price, although descriptions may not be as accurate.