This site 'Writefix.com' gives a step by step guide to planning and writing an essay that requires you to give an opinion. It also has model essays that allow you to notice how to structure an essay. You can see how other learners are writing and post comments on their work and/or write you own essay on the given topic and post it to the forum for others to comment on. There are IELTS speaking materials and practice tests. It also has practice materials for TOEFL, and TWE tests.
There is much more to this site however. Check out all of the links and explore for yourself.
