Check this site for weekly spelling tests and games.

http://www.spellingcity.com/rsprous/

One of my favorite websites to use when I have a grammar question is Grammar Girl. This website has saved my life more than once.

http://www.quickanddirtytips.com/grammar-girl

In need of a dictionary? A thesaurus? A helpful quote? Or, maybe you just want to explore the English Language. This is the site for you.

http://www.reference.com/

Sometimes English can be confusing. This has never been truer than when it comes to idioms.

http://www.idiomsite.com/

Feeling Words

http://quizlet.com/6633810/childrens-list-of-feeling-words-flash-cards/

Want to know the meaning and the history behind slang?

http://www.history.com/shows/americas-secret-slang