I get asked a lot where I get all of the cool websites, tools, and tricks that I share during my workshops. Some of them I simply stumble upon, some I've seen in other workshops, but most of them I find while reading the blogs of other techie teachers. I don't blog much, I've never Tweeted, and rarely update my Facebook status. However, I read lots of blogs, follow tons of people on Twitter, and check into Facebook daily.
Two blogs that I would highly recommend as a starting point if you want to start collecting ideas and tools to use in your classroom are:
Free Technology for Teachers by Richard Byrne
TeacherThink by Jeff Naslund
Read them. Bookmark them. Visit them often.