Some links I have found at ETC:
http://www.englishtenseswithcartoons.com/page/tenses/present_continuous http://www.englishtenseswithcartoons.com/page/going_to.html http://www.englishtenseswithcartoons.com/page/tenses/future_simple
A list of articles and tests concerning "future tenses". http://www.englishtenseswithcartoons.com/page/tags/129
I hope that helps and let me know if you have any more specific questions.
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Some links I have found at ETC:
http://www.englishtenseswithcartoons.com/page/tenses/present_continuous
http://www.englishtenseswithcartoons.com/page/going_to.html
http://www.englishtenseswithcartoons.com/page/tenses/future_simple
A list of articles and tests concerning "future tenses".
http://www.englishtenseswithcartoons.com/page/tags/129
I hope that helps and let me know if you have any more specific questions.