Our Fx3.6 Test Lead, juanb, tchung as well as sethb and Pike will be available through IRC Chat ( channel #testday on irc://irc.mozilla.org ) to help with any of your questions/comments/suggestions.
As for where you can find the latest beta build, go to http://www.mozilla.com/en-US/firefox/all-beta.html
For more information, here's our event details page:
http://quality.mozilla.org/events/2009/nov/20/testday-l10n-and-qa-test-firefox-36
Hope to See you All There,
aakashd
Mozilla QA