Logos Bible software is fantastic software. It might not be cheap, but thats because the number of resources it includes would stress your bookshelves if they were in print. I have had a special offer of 25% off base packages for readers of my blog. Logos are kind enough to give me a referral fee which goes some way to offset my costs in running this blog.
Follow this link for instructions on how to claim your copy. Note that you do not have to order the Bible Study Magazine in order to do so.