Kevin Hicks is a great resource on the longbow: https://www.youtube.com/watch?v=EvKJcxa8x_g
He is also very knowledgeable about all things from this period of history: https://www.youtube.com/watch?v=hUYd6pNy6QU
There is also some more detail regarding the make up of the "English" army bowmen here: http://www.bowyers.com/bowyery_longbowOrigins.php
Sidenote:
- Bowyer: Makes the bow
- Fletcher: Makes the arrow
- Stringfellow: Makes the string
- Arrowsmith: Makes the arrowhead