What are the best question-and-answer sequences on Buddhism?

If you would like to, suggest the -- let's say 10 -- best core question-and-answer sequences on this site ... which you would select to present (maybe for a tiny book "BSE and beyond - teachings on Dhamma", or a introduction link for a "new-comer" here). Ideally an answer should provide a nice ["Step by Step" teaching](http://zugangzureinsicht.org/html/ptf/dhamma/index_en.html) . *[Note: This is a gift of Dhamma, not meant for commercial purpose or other low wordily gain by means of trade and exchange]*