This is a helpful article that lists 13 errors to avoid when discussing, learning about, and teaching Eschatology.
Here is the article:
I appreciate the quote from one of the greatest preachers in the last 100 years:
“The great doctrine of the second advent has in a sense fallen into disrepute because of . . . this tendency on the part of some to be more interested in the how and the when of the second coming rather than in the fact of the second coming.” – Martyn Lloyd-Jones