This website lists up all names in Harry Potter and gives a translation in many European languages. Did you know for instance that Albus Dumbledore's name is Albus Perkamentus in the Dutch version? Go here and find out about all names! This website might be very helpful to you if you aren't an English native, so you can look up the words which can't be found in dictionary to understand the original Harry Potter Films and Books.
This website offers Harry Potter costumes for sale. They do have a huge number of costumes, so no matter whether you prefer Ron Weasley, Lord Voldemort or Harry Potter himself, they have these as well as several other character costumes. Their Harry Potter costumes come in a range of child and adult sizes, which allow you to have the best fitting costume.
Harry Potter Search Engine is a search engine to search for Harry Potter websites. The fans rate the sites that is listed on this Search Engine. It also has pictures for your search and videos that you can watch on the bottom of the search result.
A german website, very similar to vikipedia, just that the contents are about Potter alone. A great source for real good Harry Potter information.
This site belongs to The Leaky Cauldron. A good place to visit if you wish to celeberate the release of the seventh and final Harry Potter Book!
This site offers you very helpful information on how to get along on J.K.Rowling's official website.
A site dedicated to giving you all you need to write to your favourite hp stars. Including addresses, tips, advice, topic starters and loads loads more.
A website specialised on Harry Potter humor.