If you have to ask that question then altcoin development is way over your head. It's hard to wrap your head around even for experienced users and of course there is no video describing how to do it.
You would need to start learning how to code. I doubt a bit that you have the ability already.
I have knwoledge about hml/css, can read javascript and some php, but i think it idnt enough to develop a coin.
It require many years of experience i think, hope one day i am able to create one.