WordPress users may install and switch among different themes. This themes allow users to change the look and function of a WordPress website without any changes in the core code or site content. Every WordPress website requires at least one theme to be present and every theme should be designed using WordPress standards with structured PHP (Hypertext Preprocessor) earlier called personal home page and valid HTML (HyperText Markup Language).
When you buy premium theme for your website, their is lot of demos themes and functions so seller suggest you to customize your website by professional ways.
This article will help you to modify your homepage in premium theme
step 1. Login in your wordpress account.
step 2. Click on theme panel, pop-out your website in new window.
step 3. click on edit with TD composer as shown below.
From this windows you can edit your homepage and post page like custom settings, header template and content length
step 4. click on add element, where you can add row, column and different block for your page.
Than new page will pop-out, click on a sector which you want to customize.
From here you can add row, column and different block for your homepage and post page.
Most of the function or settings in premium themes or professional themes is in default mode.