WordPress site – how to more pages?

Hi there!
I have a website at this address: http://video-filmy.cz/
I have there more than 50 articles but all of them are still on homepage and I think that my site is too large (page loading is thus slow). May you help me, how to create more pages on my homepage? I am using wordpress (leaf template) and here is picture of what I have in mind.

Thanks in advance for all your replies,
Denisa

See original post by DenisaFrisk