Starting YouTube tips?

I am finally plucking up the courage to start a YouTube Chanel! But first could you let me in on the basics and what can help my Chanel grow? Bare in mind I have quite. Decent twitter page with around 1,150 followers so that could come In handy, please, anything will help.

Also if you have any solutions for;

Lighting - cheap, easy and preferably made from things I would already have it can buy from a supermarket.

View finding - I have a decent camera but it has no view finder do you have any easy solutions to see myself hahah.

Filming + advertising - any camera tips, like modes etc I have a 'Nikon coolpix l810' camera. And a way to let people know I exist and my Chanel isn't THAT bad Ahaha.

Thank you in advance.
I'm 13 so please bare that in mind.

Read more: Starting YouTube tips?