Think twice about buying beads at the local craft store. Beads for flytying are counter-drilled on the back side so they have room to slide around the bend of the hook. Craft store beads are not and may not fit around the bend unless you buy extra large beads, which will fit sloppy on the hook and look like crap.
The only thing I really use craft store beads for is when I tie tandem hook flies. I use them to keep the wire/mono used to join the hooks, together and add some color.