While its easy enough to get dried herbs, fresh ones are better and they aren't hard to grow. You can get parsley plants from most decent plant shops. They aren't fussy and will grow anywhere - on a kitchen window sill or in your garden. They spread like wildfire however, so if you don't want to be forever weeding them out, plant in a large tub.
Parsley is great for sauces - anything with fish, you can eat it raw or cook it in with almost anything. Its got a really versatile flavour and I have yet to find something savoury that it doesn't really go with. If you want to try you hand at herb growing, start with this one - its really easy to grow and really easy to use.