Share 'lesson plans'

I am a first year teacher at a private school in Kansas City, Kansas. My subjects are computer skills and Gym for grades K-8. The gym I can handle but the Computer class has no manuel. I have to come up with lesson plans off the cuff, no book and ages range from K-8. I am looking for help with lesson plans in this age range. Or a good book to help, any direction or starting point, anything would…