I had posted about this site last year, but wanted to mention it to everyone again. 180 Technology Tips is a great resource for educators, providing free technology tips and help. You can visit the site or subscribe to get an email every school day (hence the 180 tips) with a short lesson on some aspect of technology. The site reviews web searching, Word and Excel tips, email, hardware and software, and much more. You can also look at the past lessons in the archive.
It is a great resource that is well written and easy to understand.