How do you learn from other traders' mistakes instead of your own?

Reading loss stories is the cheapest education in trading. Every margin call, blown account and revenge-trading spiral posted here is tuition someone else already paid.

How do you use this forum for that?

• the threads you read for warnings
• a mistake you avoided because you'd read about it
• how you separate useful warnings from noise

Start with the psychology category, then the beginners threads. Someone's worst day is your free lesson.