Bob Henley's Tie-A-fly kits are geared towards the novice fly-tier and or fly-tying class student. Each kit contains adequate materials and instructions to tie 12 flies of the specified pattern as well as including a pre-tied fly to compare your efforts  with.. All of the basic patterns are available.

Material contained in the Bob Henley's Tie-A-Fly kit for the light Cahill:

Professionally tied Light Cahill to use a model
Complete instructions matched to clearly drawn illustrations
Four #12 hooks
Four #14 hooks
Four #16 hooks
Dyed Mallard flank feathers
Cream dubbing
Cream rooster hackle for the tail
Four #12 Cream rooster neck hackles for hackle
Four #14 Cream rooster neck hackles for hackle
Four #16 Cream rooster neck hackles for hackle
Cream thread