There are dozens, maybe hundreds of websites that offer free Bible studies. These are three that I found that look pretty good:

christianitytoday.com/biblestudies/ They give a huge list with comments on each course, but no overall remarks.

free-bible-study.org/ They say this about their site, "We have evaluated a massive amount of Bible Teaching from around the globe and distilled it down to this site, the best of the best in modern Bible Studies. Let us guide you on your quest for truth as it is recorded in the very words of God, the Bible."

topicalbiblestudylessons.com/ They just give categories and titles without comment. They appear to be presented in Microsoft Word format for easy editing should you wish to modify them.

Entering "free Bible study" into Google's search engine will present you with more links than you can ever look at. Be careful. Many of them are cult based or have a heavy agenda of their own.

So why should you think ours is best among all the free material available?

What sets our lessons apart is:

THE HOLY SPIRIT IS THE TEACHER
     Each lesson gives the Holy Spirit space and time to influence the students.

THE BIBLE IS THE AUTHORITY
     All the other Bible studies I have found seem to speak from their own knowledge, instead of just offering their knowledge, and letting you make up your own mind in prayerful consultation with the Teacher as you study the Bible.

DENOMINATIONAL NEUTRALITY
     We have tried to base the lessons on a simple generic statement of Christian faith.

SIMPLE LOGISTICS
     Each lesson is usually only one sheet of paper. There are no books to manage. (except the Greek course.)

LESS LEADER PREPARATION
     If you are using the lessons with a small group or in Sunday School, the group leader is just one of the students who happens to be responsible for keeping the discussion on track.

STUDENT INTERACTION AND PARTICIPATION
     The questions are designed to maximize thought and prayer, and in a group setting this serves to increase student participation and discussion of the Bible passages.

FLEXIBLE TIMING
     Most lessons have additional optional material.

FLEXIBLE DELIVERY
     Most courses can be used by a group or as a self-study as well as with a pen pal ministry.

FLEXIBLE PRINTING
     Many of the illustrations are in color, but they can be printed and copied black & white if necessary and still look fine.

FLEXIBLE PRICING
     They don't cost anything.