The audio bibles found at www.biblegateway.com/resources/audio/ are my ultimate bible study tools. Every morning I crack open my ESV Study Bible, then I click on BibleGateway.com and bible study begins! Reading and hearing God’s Word at the same time greatly enhances my study time and it helps keep me focused. Free bible apps can be found in the itunes store and Android Market that have audio bibles included as well. www.blueletterbible.org is also an excellent online resource.