1. Title, Subtitle & Description
In WordPress dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on Homepage Section than Blog Section
In Header you will change Title & Description.
Go to Customize -> Homepage Section -> Blog Section -> Header ->Title, Subtitle & Description
2. Blog Section Content
In WordPress dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on Homepage Section than Blog Section
In Content you will Select Number of Post.
Go to Customize -> Homepage Section -> Blog Section -> Content -> Select Number of Post
3. Hide/Show Blog Section
In WordPress dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on Homepage Section than Blog Section
In Setting you can also hide and show the Blog Section by clicking hide/show button.
Go to Customize -> Homepage Section -> Blog Section -> Setting -> Hide/Show
You have to use Blog Image Size 1280Px X 853Px