Welcome to the Nexus, wineart!

As said above, it just takes a little patience and thought to understand the extraction process.  I think that the DMT Handbook [PDF] does the best job of explaining the overall process.

Suppliers can easily be found in the Suppliers section.

Something that SWIM did to help her learn, was chose a tek, printed it out, and then wrote in her own words what each step was intended to do.

It must be wonderful to have such a supportive wife.

Be well.