There are many online tools that can be very helpful for Bible study, and we will share a few of them.

The KJV Bible with Strong's References (Includes links to Greek and Hebrew word definitions)
Looking for the easiest way to find Strong's references? This is it! Just click on the book and chapter that you are studying. Then click on the word that you want to see the Hebrew or Greek word along with the English definition. Try it!

Strong's Concordance with Hebrew and Greek Lexicon
This site has several tools all on one page besides Strong's Concordance: Multiple Dictionaries (including Easton's Bible Dictionary), Wikipedia Encyclopedia, and Encyclopedia.com, Roget's Thesaurus.

Crosswalk Bible Study Tools
If you sent your Preferences for this site (link is below the search text box), you can select "KJV with Strong's numbers". There are many commentaries and other resources here also.

The Resurgence Greek Project
Even if you don't know Greek, there are some useful tools at this site. It is a more advanced site, however, to help the serious Bible scholar.