Are you mystified by the book of Revelation? You're not alone! A few years ago I taught through Revelation for our church on Sunday evenings. I made a lot of effort not to get bogged down in a lot of details so as to preserve the big picture of the book. Very shortly thereafter, I taught the same series to a group of senior citizens. They had a great interest in the book. Perhaps this is not surprising in the sunset years...the desire to know what is on the horizon, which grows nearer and nearer for those in retirement. Whatever stage of life you are in, the things coming in the future are relevant for our conduct now, as 2 Peter 3:11-14 exhorts.
The notes are available in this PDF file.