MIT website: http://web.mit.edu/vywang/www/

Wordpress blog: http://vywang.wordpress.com/ (will hopefully have stuff once I figure out how to do http://lucatrevisan.wordpress.com/latex-to-wordpress/)

In particular, new shared resources link (handouts, notes, etc., both my own and other googled ones; in particular, I now have most of the stuff I wanted to share from HS*): https://www.dropbox.com/sh/kzf5l6uyzgkk2tj/AAA_xuAMQHX1dlswHAuwi5e8a

EDIT 7/26/19: This is broken. Some files may be available upon request (email me), but for many reasons I cannot post a public link. My understanding is that other people have been creating their own repositories, anyways.

(The link will inevitably break once I start moving stuff around, so let me know if that's the case. But I'll try to at least keep it updated on my website.)

*but was too lazy to. Note that this is a suboptimal way to share resources. An easy optimization would be to have a globally shared folder for every subject (more realistically, to avoid an organizational nightmare, people could label their files with multiple tags). This is actually sort of the idea behind https://selectedpapers.net/ (http://gowers.wordpress.com/2013/06/16/the-selected-papers-network/). Hopefully Alex Zhu sets up something along these lines for his startup.

(I should also add that just having resources without guidance is suboptimal too... but adding guidance/some direction doesn't seem too hard after collecting resources... also the linked blog post discusses a lot more about contests. Generally, I think better communication/collaboration in the contest community (and in general) could do a lot...)