Do you think that it may be wise for a Christians to read the Qur'an for educational purposes? Thank you.
It certainly can be educational to read the “primary sources” of other religions. In this case, such educational reading of the Qur’an can help equip Christians in their witnessing to Muslims.
If you are interested in a book that provides a brief overview of the Qur’an, accompanied by a biblical response of law and gospel, I can recommend this one: “Speaking the Truth in Love to Muslims.”
Your question is a good reminder of a practical way in which we can prepare ourselves for future witnessing opportunities (1 Peter 3:15) to Muslims or anyone outside the Christian faith.