The balls you can wet felt. You can also wet felt the flowers (www.achildsdream.com
has a wet felted flower kit, for example). http://mielkesfarm.com/flt_ndls.htm
has felting needles (you really need these to do dry felting - they are different from regular sewing needles and MUST be used with great caution - they are VERY sharp. Tho I swear no one believes me until they prick themselves.
For the pictures, you might see if your library has the books Magic Wool and More Magic Wool. They have directions on how to do dry felting people, and those pictures. You will probably need a felting needle for those.
You might be able to get a felting needle or two over on the trading post, as well - someone who felts regularly might buy needles in bulk (good ole ebay) and be willing to sell you a couple cheaply. As an FYI: at mielkes, they're a pack of 5 for $5. PEace Fleece has them for 25c each, with a flat $2.50 for shipping when you're ordering just felting needles.http://peacefleece.com/felting.htm