I wanna be a Hooker!

I wanna be a hooker but I am confused on how to start. I look at patterns that recommend purchase of say a Mustad XXXX or TMC ZZZ-C. I rush to any number of fly tying equipment suppliers only to find No, Zip, Zero, Nada reference nor hook for sale by that manufacturer by that number.

I use the Hook cross reference I found through Google. Most times, there is no direct correlation of one hook to the other.

How did you guys get to be hookers if ya cannot find the hooks?