Be good at tpt. 

Well, a computer is not something you toss a bunch of wires into and expect it to work. I recommend you watch Crash Course's Computer Science, where they will teach you how to make a computer using logic gates. Then, replicate the design with your own TPT logic gates or borrow someone else's. Finishing touches. I like to set a DLAY on some wires as some logic gates take longer to function than others. This process can save you from a headache or, worse, a complete restart later on. Now it's time to go subframe. I personally never understood subframe no matter how many tutorials I watch and how many saves I go into, so you are on your own from here. But there are great subframe 101 saves I will link down below. Best of luck!

The stamp above should give you a basic understanding, and the save below is the tutorial.

Of course, it is helpful. By pointing the return ARAY in another direction, you can make a long-distance electricity transmitter. Electricity goes in, and the ARAY blasts it into another wire somewhere else. You can achieve the same with WIFI, but it is way more understandable using ARAY.