This video by woodcraft expert Ray Mears is truly worth watching. Mears uses nothing but flint implements and natural materials from the woods and shows how to make a bow, with flint tools, how to make, straighten and fletch arrows, and how to make fire using flint and iron pyrites with fungus as tinder.
One specially interesting point is that he uses a mixture of pine resin and charcoal to glue his arrowhead to the arrow, but he doesn’t boil up pine bark – instead he searches for and scrapes away natural excrescences of resin. A second interesting point is that he makes glue to attach the feathers by chewing bluebell bulbs!
Visit The Museum of The Stone Age here http://www.stoneagetools.co.uk