In the past I've talked about how I keep up with the vast amount of information and changes in the security and IT fields. That article focused on podcasts. Another key tool I use is an RSS aggregator.
An RSS aggregator is a program used to collect information from online sources. You "subscribe" to a site (such as this blog), and then notices of new articles are automatically brought into the aggregator. The power of the tool is that you can organize your subscriptions by categories you choose. You can then quickly browse new articles by category.