Three people stand out.
Deborah (chapters 4-5) – During the third cycle of oppression, God raised up a woman named Deborah to lead the nation politically and spiritually. Although Barak led the troops into battle, she was clearly the brains behind the operation.
Gideon (chapters 6-8) – Some of Gideon's heroics may be familiar from childhood Sunday school stories, but he's an interesting study. He has a unique brand of measured boldness, only to fall prey to the pitfalls of success.
Samson (chapters 13-16) – I think this guy is one of the most perplexing characters in Scripture. He had a casual disrespect for God's law, mixed with an undeniable divine empowerment. I can't figure him out.
Things to note
What you learn about us as human beings. Judges offers a stark account of what we are like, especially when we are left to ourselves.
How God displays His grace and His power.
Your turn – What have you learned from the book of Judges?