The Official Version of Events

https://en.wikipedia.org/wiki/Boston_Marathon_bombing 

https://archives.fbi.gov/archives/news/pressrel/press-releases/2011-request-for-information-on-tamerlan-tsarnaev-from-foreign-government 

https://www.theatlantic.com/national/archive/2013/04/boston-door-to-door-searches-legal/316042/ 

The Conspiracies

https://www.theguardian.com/world/us-news-blog/2013/apr/24/boston-marathon-conspiracy-theories?utm_source=pocket_saves 

https://www.huffpost.com/entry/stella-tremblay-boston-bombing_n_3140461 

https://blog.al.com/live/2013/04/boston_marathon_explosion_univ.html 

https://www.newyorker.com/news/news-desk/the-naked-man-watertown-and-conspiracy-theories?utm_source=pocket_saves 

https://www.madcowprod.com/2013/04/22/was-boston-bombers-uncle-ruslan-with-the-cia/