Get started by first developing a strategy, as you would with any communication program. Which niche do you want to focus on? Who is your audience, and what do they care about? What are you trying to achieve by curating content?
Then, find content relevant to your niche, whether that’s vegetarian cooking, pharmaceutical trends or aerospace engineering. You may already be watching; reading; and listening to videos, blog posts, tweets, news articles and podcasts within your area of expertise. You can also use saved Google and Twitter searches and RSS feeds to help you uncover important nuggets of information.
The next step is to organize and make these tidbits easy to find in the future. You can bookmark them using such free online services as Delicious or Diigo (or both, since the future of Delicious is up in the air). Adding multiple tags to your curated information increases the odds of your finding it again later.
The final step in the curation process is to share or publish your content, not through automated aggregation, but in a human way—perhaps with your own comments added to help your audience understand the meaning of what you’re sharing. Several tools are available to help you accomplish this. (See "Curation Tools," below.)
Yes, I said “final step,” but it helps to think of curation as a loop, where you are continually adding to your knowledge, organizing it and sharing. You might also want to measure the feedback you’re receiving from your audience. Are they in turn sharing your content? Are they commenting on it positively or negatively?