If all you want to do is get your page on the web, choose one of the first two methods and spend your time writing more lesson plans. The first method is to have somebody else put it on the web for you. I'm not kidding here. You're good at teaching, some people are good at the web. If you don't have the time or don't want to invest the time to figure it all out, find someone who likes doing it.
Specialization leads to increased productivity.
Someone in your school or district can help you. Click here to go to a page that will lead you through the process. The second possibility it to have your lesson plan published on a commercial hosting service. You find these places on the web, register, and using their templates create a lesson plan website directly on the web. Click here to go to a page that will lead you through the steps to create a page right on the web.