Help

Hi i’m new at WordPress,
and I can’t make all the things you have in your demo.

1.-I’ve tried to make the blog Isotope,
but when a make a new post it shows as a normal post.

2.- I’ve tried to change the background but i don’t know the sizes of the images.

3.- I’ve tried to make the paralaxx but i can’t make it work.

Can you help me?

Thanks