The book of Galatians in a question and answer format.  The key them is the nature of the law and justification by faith.

• What should be our response to those preaching a different gospel? They should be rebuked harshly (Galatians 1:6-9)
• Whom should we please? We should seek to please God rather than man (Galatians 1:10-11)
• How did Paul learn the Gospel? He learned it directly through a revelation of Jesus (Galatians 1:12-23)
• What is the law? The law is a guardian or prison until Christ came to reveal justification by faith. It is a curse for those who try to keep it (Galatians 3:10, 22-23)
• Why was the law given? It was a temporary provision or guardian given because of our sins until the promised offspring of Abraham (Jesus) would come and be revealed to those who were to believe in Him. It cannot give life (Galatians 3:19-22)
• Are we required to keep the law? No, righteousness is not through works of the law. We have died to the law and are no longer under it as a guardian. (Galatians 2:3-4, 11-21; 3:24-25; 5:18)
• Should we return to the law? No, it is weak and worthless to us for we are no longer slaves to it but free (Galatians 4:9-10, 21-31; 5:1-6)
• What happens to those who rely on works of the law? They are under a curse (Galatians 3:10)
• What is a summary of the law? You shall love your neighbor as yourself (Galatians 5:14)
• Why are we given freedom from the law? To serve one another through love (Galatians 5:13)
• How are we justified before God? In the same way Abraham was, by believing God to be counted as righteous. Not by works of the law, but by faith in Jesus. This is true of the Jews and Gentiles (Galatians 2:16-21; 3:6-9, 11-18)
• What are we in Christ? Sons of God, Abraham’s promised children, through faith (Galatians 3:6-9, 26
• How did Jesus redeem us? By becoming a curse for us by hanging on a tree (Galatians 3:13)
• What was the covenant with Abraham? It was one of promise and not law because the promise preceded the law and the law did not annul it (Galatians 3:15-18)
• What does it mean to follow Jesus? I have been crucified with Christ. It is no longer I who live, but Christ who lives in me. And the life I now live in the flesh I live by faith in the Son of God, who loved me and gave himself for me (Galatians 2:20)
• Who were Peter and Paul’s missions to? Paul’s mission was to the Gentiles and Peter’s to the Jews (Galatians 2:7-10)
• How will the Spirit accomplish His work in us? By faith rather than through the law or flesh (Galatians 3:1-6)
• Who are the sons of Abraham? Those of faith just like Abraham the man of faith (Galatians 3:7-9, 29)
• How many gods are there? There is one God (Galatians 3:20)
• What is our relationship to God? In Jesus, we are adopted children of God through faith and heirs (Galatians 3:26-29, 4:4-7)
• What is our relationship to other Christians? We are no in Christ regardless of background (Galatians 3:28)
• Why did Jesus come? Jesus came to redeem those under the law, so that we might receive adoption as sons (Galatians 4:4-5)
• Why has God sent His Spirit? Because we are His (adopted) children (that we might be like Him) (Galatians 4:6-7)
• What we were like before Christ [came]? We were enslaved to the elementary principles of the world and to those that are not gods (Galatians 4:1-3, 8)
• What is the relationship of Spirit and flesh? They are against and opposed to each other (Galatians 5:16-26)
• What are the works of the flesh? Sexual immorality, impurity, sensuality, idolatry, sorcery, enmity, strife, jealousy, fits of anger, rivalries, dissensions, divisions, envy, drunkenness, orgies, and things like these (Galatians 5:19-21)
• What is the fruit of the spirit? Love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control (Galatians 5:22; 6:7-9)
• Who should we do good to? Everyone, but especially to other Christians (Galatians 6:10)
• What should happen to someone caught in sin? Their burdens should be borne by others that they might be restored in gentleness (Galatians 6:1-5)
• How should we relate to sin? By keeping watch on ourselves, so that we are not tempted (Galatians 6:1b)
• What is the law of Christ? Bearing each others burdens (Galatians 6:2)
• What should those taught relate to the teachers? We should share what we have with them (Galatians 6:6)