Hello!

Let's talk about wiki!

Teflpedia, in particular.

The site has fairly friendly interface.

There you can find free lessons. And also upload your own lessons  if you have something to share with other people. 

Wikis are growing in popularity, and this is a good place to learn wiki-editing skills.You may contribute to the growth of something new and be involved in something really cool.
You have an ability to write your own article. It's a good possibility to reconsider, put together, organize your thoughts and knowledge! There you can also find articles which include advices for new teachers.
"Teflpedia serves as a quick reference providing useful links to an almost infinite number of resources and dedicated websites available on internet. You'll find tried-and-tested ideas for warmers, wordlists, pronunciation exercises, and the odd cultural aspect of the UK or the US that you might develop for use in class, among other interesting stuff.Participate in our ongoing debates.Pop into our teachers' room to get feedback on any ideas, concerns or just for that friendly chat over a cuppa".
I think the service will be more useful for teachers than for students. This is a good opportunity to discover something new, get excited, learn and share your experience.