I am doing a midterm prodject tracing the different trends, styles, eras of the decorative arts (mainly interior decorating). I can not seem to find much info. Im wondering if any one could give me names of some of the eras they know of, so I at least have a place to begin researching. > Thanks so much! Anything helps!!!!

The book "The Practical Book of Interior Decoration" By Harold Donaldson Eberlein, Abbot McClure and Edward Stratton Holloway, The J.B. Lippincott Company copyright 1919,1937. Is a good book to find information and photos. It has black and white and some color plates. It covers Historic period decoration in England, Italy, Spain and France, Practical decoration and furnishing, and International-Inter Period Decoration and furnishing. You may find it in libary or you may have to look on-line for out of print books. The Photos are actual period photographs,(which will rule out and later date interpretation of the true styles).
Renaissance, Baroque 17th Century, Rococo, Neo-Classic, Art Nouveau, Art Deco, Modern...

If you're looking for interior design resources online then you should visit the school of interior design. The site is a great place to get interior design ideas and inspiration. Different links to various online communities are also available. I think this is all you need to get your project done.