Teaching Class

Today, I had my first IT class in the computer lab. Make sure that everybody is able to log in. Teach what a double-click is. Then everybody creates a folder with her or his name. Have you ever created a ten folders at the same time in a Windows Network Folder?? Hey, you start to run into concurrency issues...
Then, opening Word. Save a document. Close Word. Open Word again and open the document that you created before. Close Word again. Log off. And your 60 minutes class is over. That are the realities.
Besides the above mentioned things, we were fighting with non-existing or badly working computer mice. You say all that stuff is easy. In theory yes, in practice not.