That would be a useful website, but there is no substitute for doing your research. A few books to give you some ideas.
The Golden Bough - Sir James Frazer. The first work, never rivaled, of comparative religion, mythology and magic.
Magick - Aleister Crowley. Love him or hate him, his ideas brought the Western occult tradition to the masses.
Tales from the Arabian Nights - Trans. by Sir Richard Burton. A treasure trove of magical lore.
The Magician, His Training and Work - W. E. Butler.
The ABC's of Witchcraft - Doreen Valentine.
There are tons of books of the diffent systems of magick in the world. I did extensive research on magick, druidism, celtic mysticism, comparative mythology, etc. for my fantasy books.
Best of luck.
Diana