I am looking to expand my understanding of this great hobby and am wondering if anyone knows a pretty detailed source of how to determine die states. I understand that later die state coins show easily seen die flow toward the rim. I want to study up on what the difference is between MDS & LDS and EDS & MDS. What is the line the coin has to cross to go from EDS to MDS, ect. What are the things to look for?

Is there a source out there like I am looking for or does this knowledge just come from experience?

Thanks all!