Prior to stopping this practice I heavily underlined & scribbled in my KJV Thompson Chain & MacArthur Study Bibles, but I didn't have any pattern or system to my underlining.
With my recent move to the ESV Study Bible & with such advice as that from Matt Chandler's message on studying the Bible (my notes from it are here), I want to resume this. But i don't feel that I can resume my random underlining with various colours etc having no real coherence to it.
So I thought I'd ask around to see if anyone can advise any patterns or systems that they find helpful or know of, that may be helpful to me as i read through God's Word with pen(s) in hand.