How to shave correctly?

Well I’m currently 17 turning 18 in December. I’ve been shaving for almost a year now. My father left me whilst i was young and never had someone to show me how to shave or any good advice.

Now my mates have given me some tips. When i do shave i don’t actually have shaving cream i just use soap and make it lather(I think that’s the word). I use disposable razors and i shave from the side(ears) inwards going straight down, i recently saw on an add people go along the jaw line? Then i go upwards from the neck towards the jaw line. Then finally around the mouth.

I would like some help and have been a little shy to ask people about it. So some help would be nice thanks in advance 🙂