To pick out a book to read that's appropriate to your current mood, try: Forager. Book Browse. All Readers. Bibloiomania. Read the dictionary, or, at least, look up new words: Oxford English Dictionary. Webster's Online Dictionary & Thesaurus.
Use your local library. Use the internet (with salt and pepper); try Wikipedia. Avoid literary scams.
Poets and Writer's Magazine. PEN. Poets.org. (See the sidebar for some of my local communities.)
Play with Language
World Wide Words. Translating Dictionaries.
Q & A.
The Bulwer-Lytton Contest. Exquisite Corpse, the writing game. Poetry for Pleasure. Write erotica.