If you are just starting an art collection Poppytalk might be a good place to start collecting. Like many "handmade" art sites, Poppytalk shows a variety of different types of items. For future value, etchings, woodblocks, lithographs, or other handworked print media is usually the best bet. Because giclees are machine produced reproductions, many appraisers believe that the future value will not increase (same goes for home computer printing). If you can, stick to originals or processes that computers were not involved in.
Photography is the exception to the rule. Because of the nature of photography handmade prints are ok.