Definitely. You may be familiar with the scriptures and concepts in each session however if you are open to the Holy Spirit doing a deeper work within you, He will. The course is filled so much with the Word of God, it’s alive and will speak to you.
This course is designed for a committed Christian, but saying that, session one explains very clearly about God’s salvation plan for you. Therefore, I would consider completing at least session one at which point you may feel led to complete the rest of the course.
It’s always nicer to meet in person if convenient, however, that said I have taken many people through the material online via Zoom or facetime as long as you have a good signal it works.
It’s great you are taking your friend through the material; they trust you. If they are not hesitant to share with you what may surface, then carry on. Would be good to ask them about this beforehand, and both of you pray. Only with peace of heart continue.