I have used this site with my student interns. They are teaching in their own special education classrooms, but, for most of them, this is their first teaching job. This website is a compilation of many, many links to some excellent pages on topics from American Sign Language, to Gifted and Talented Education, to Speech and Language. When we begin our discussion of developing and writing lesson plans, I use this site as a reference for good ideas and solid examples. It also contains links to professional organizations, and a number of other sections which my teachers in training have found beneficial.
Several of the linked websites require the latest version of QuickTime in order to run.