Who said there’s nothing free in this life. Covenant Baptist Theological Seminary has recently made available all of the lectures for their Doctrine of Last Things course taught by Dr. Sam Waldron. I took this exact course for credit a couple years ago and it is excellent. I’ve also included a link to notes from a similar course taught by Dr. Waldron. They may not correspond exactly, but they’re close. I’ve included the first lecture as a teaser.
Lectures – Mobile friendly: https://www.monergism.com/eschatology-comprehensive-historical-and-theological-overview