American media accounts tend to focus on the umbrella- now only four days in immortalized as a revolutionary symbol- as a way to deal with pepper spray. What gets left out is that Hong Kong has a subtropical climate. Not only has it been in the 90s (F), the summer is also notoriously rainy. In this way, umbrellas are the ultimate protest tool. Not only have they helped against police crackdown, the shade and rain protection have kept thousands of people at their posts. An economic shutdown only works as long as people are willing to stay out in the highways and streets.
Twitter is probably the best way to keep track of things, but some websites are doing an excellent job. The South China Morning Post has kept a very well-maintained English-language liveblog, the current section is located here.
Occupy is not just a movement, confined to a place and time. It is a method of action. It is a title given to those that go out and work. It existed long before there was a march on Wall Street, and exists now and will in the future. The protest here has been incredibly well-coordinated, but on a grassroots level. If people are disciplined and certain key traits (nonviolence, respect for the city) are maintained, there is no need for a rigid hierarchy. I am continually impressed by the humanity and decency shown by the protesters, but also their strength under fire, and their endurance under bad conditions- whether pepper spray or pelting rain.