These are all excelent resources to learn more about working with glass –
Contemporary lampworking vol I, II and III – Bandhu Dunham – This is a bible of information for all types of flame work.
Creative Glass Blowing – James E. Hammesfahr, Clair L. Stong
Making glass beads, Beads of glass, and You can make glass beads – Cindy Jenkins
The complete book of glass beadmaking – Kimberley Adams
Advanced flamework – Milon Townsend
Glass artistry- Bob Martin