This tutorial is long overdue.  Many students ask me about the difference between adjectives such as 'interesting' and 'interested' or 'exciting' and 'excited'.

I made a video explanation about these adjective forms.  Also, I made a PDF practice page.  You can view them on my blog here:

http://www.enupgrade.com/troubleshooting/2014/7/24/interesting-interested

Happy studying :)