Select a Nouveau piece that fits your taste. Tiffany created lamps, stained-glass bowls and other high-end items that can be found in homes, churches and businesses. Mucha was an artist from what is now the Czech Republic who created paintings, illustrations and advertising posters often featuring female figures surrounded by lush flowers, in pastel colors. Louis Majorelle was a decorator and furniture designer; his pieces, known for their beautiful inlays, took inspiration from nature — including plants, waterlilies and dragonflies.
Find objects that are affordable. Going to estate sales by people known to have Tiffany items or to be collectors of Art Nouveau. Estate sales can be found online or in the classifieds of newspapers.
Make certain what you have is genuine, if you are investing in a real Art Nouveau piece. Consult an art appraiser; there are online resources to help you do this. Also consult art appraiser organizations to be connected with those who specialize in Art Nouveau. Such organizations include the Art Dealers Association of American Art Appraisals, and the Appraisers Association of America.