If the MySQL site (including documentation) isn't working for you, try a mirror site.
"But," you ask, "how do I know what the mirror sites are if I can't access the site?"
Great question! Technocation has a mirror site (updated daily) at http://technocation.org/mirror/mysql/.
Also, we have purchased www.mysqlmirrors.com which points to the official list of mirrors at http://technocation.org/mirror/mysql/downloads/mirrors.html. Note that this page is hosted at Technocation, and is part of Technocation's mirror of MySQL -- so a mysql.com outage does not affect mysqlmirrors.com. (And I have contacted MySQL representatives to make sure they're aware, and if there are any legal/trademark issues they know I am happy to work with them to solve any such issues.)