Related. Others?

Competitive Programmer's Handbook (2017) [pdf] - https://news.ycombinator.com/item?id=17605395 - July 2018 (14 comments)

Competitive Programmer's Handbook (2017) [pdf] - https://news.ycombinator.com/item?id=16952222 - April 2018 (121 comments)

A Competitive Programmer's Handbook - https://news.ycombinator.com/item?id=14115826 - April 2017 (157 comments)

Competitive programmers handbook - https://news.ycombinator.com/item?id=13762408 - March 2017 (2 comments)