Evening Surazal
There are plenty of wheelbuilding courses you can do, we offer them at ATG training its a Three day course and you come away with a DT Swiss wheelbuilding certificate. The cost is £340 plus vat.
I have done it myself the advice I would give if you do one is keep practicing it. TBH i did the course a few years ago and didn’t build wheels for ages after and i would have to do a refresher course if i wanted to build some wheels, I’m lucky though as i can do that through work or get the other half to knock some up.
The things you will need are: A Spokey spoke Key (a red and yellow one), I would recommend you buy a jig if you want to true accurately but you don’t need to spend a fortune on one Tacx do a cheap one. You can build to the same tolerances on any jig in my opinion. Dishing tool is pretty essential .
Spoke calculation websites: I would recommend Sapim seems the most accurate as you have to measure all your components.
If your new to it I would recommend a tension meter although these can be very expensive.
Just let me know if you need more info