EXPLORER: the process can also be found with screenshots at: http://www.sleeplessmedia.com/blog/2011/12/how-to-clear-your-browser-cache-in-internet-explorer-9/

  1. Select the "Gear" Icon for Settings in the top-hand right corner of the browser.
  2. Select "Internet options" from the drop down menu.
  3. On the first page of the Internet Options Menu (Under the General Tab), Find the Browsing history section; press the "Delete" button.
  4. In the "Delete Browsing History" window, ensure that "Temporary Internet Files" option is marked and press the "Delete" button.
  5. Close the browser, re-open the it and try to access the typing tutorials again.