Go on Wikipedia, they have a list of all the spells and their uses.
I found original Harry Potter Spells on movies.
One can find information about Harry Potter Spells on the Internet. Sites like HarryPotterWikia and FunTrivia tells you all sorts of information on all the spells used in Harry Potter.
Many,I'm sure you can find all the spells on google. Hope this helped:)
I don't see why that would be "urgent". Spells, as shown in Harry Potter for example, are ficticious; they won't work in real life. Thus, you won't be able to cast any spells that actually work in real life. You can find a list of spells used in Harry Potter - and once again, please remember that these don't actually work - in the Wikipedia. Just search for "Harry Potter spells". - Or perhaps I misunderstood your question; in that case, please clarify.
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Lego Harry Potter toys can be purchased from the following online retailers: www.amazon.com, www.firestartoys.com, www.toywiz.com, and www.toysrus.com.
Harry Potter costumes can be found on eBay and Amazon and also at various online stores such as Buy Harry Potter Costumes, Wholesale Costume Club, and Costume Craze.
You can find them in many places online.
There are a number of online shops that offer Harry Potter apparel. Some of the sites are Universal Orlando (which offers a wide selection), Zazzle and Alivans.
Yes, the Harry Potter books. If you want more details about each spell and potions, please note that they are fictitious and won't work as in the books, so you can just as well make up your own spells and potions. In any case, there are references on the Web that collect all the details known from the books. You can find some things in the Wikipedia, or in the Harry Potter Lexicon.
go to any bookstore, or any online shopping site, and 100% chance you will find harry potter books for sale.
There aren't many open source Harry Potter games, but muggle.net has many fun, interactive Harry Potter games available. http://www.mugglenet.com/games/shockwave/index.shtml