Will you teach me everything you know about a very specific subject that you have mastered?

I could teach you how to silk screen art onto
tee-shirts of you like.
It's the only thing I've really mastered so far, and in order to teach you, all I'll need is a press, a darkroom, and some emultion.
(I already have the screens.)

You start with your art, which you have to cut into colour seperations, (You use one screen for each colour in the final print.) and you take the colour layers into a dark room, and tape each of these groups of little bits of plastic that you've cut out of your rough art onto a screen.
You then coat the screen in emulsion, a special light reactive solution that stop the ink from going through onto the shirt everywhere except for where you tape the colour seperations, you use a squeegey to work the emulsion into the fibers of the screen.
You then place the screen, taped on art, emulsion and all, onto a light table, where the emulsion is exposed to light, thus hardening it.

You then take the screen, remove the taped on art, and pressuer wash it, thus washing out all the emulsion that isn't set, (The emulsion that was covered by the art will not have set, and so will wash right out.)
You must do this whole process once for each colour you want in the finished design, so jobs can either be very easy, or very hard, depending on how many colours you want.

You then place the screens onto the brackets of the silk screen press, load up your automated squeegies with the proper colours of ink, and from there on, all you have to do is load on blank shirts, unload printed shirts, and then put them through a special flatbed dryer set to the right temperature to cure the ink.

There are some aspects you have to learn by doing, like the subtle relation of ink colour to screen thread count.

I'm sorry if it's not very easy to understand, but it's kind of hard to write out a process I had to learn over the course of 5 years.