After this section you can edit content via Page Builder, Go to Pages and edit Home page

Or in your site front page, in the admin bar find Edit Page ( Back-end Editor ) or Edit with WPBakery Page Builder ( Front-end Editor )

For changing Logo go to Theme Options > Header > Logo

For changing size and margin, go to Theme Options > Header > Top of Header >  Logo element

For changing background of header go to Theme Options > Header > More > Overall Header Container
For editing mobile and tablet header go to Theme Options > Header > Mobile, Tablet Header
This text and button is a custom page content, You can find and edit it from Dashboard > Page > Header Consultation Button

Also for changing margins, go to Theme Options > Header > Top of Header

For adding, removing and styling social icons go to Theme Options > Header > Header > Social Icons

And for changing margins go to Theme Options > Header > Header > Social Element

This section is Slider, You can edit, add or remove go to Dashboard > Revolution Slider

For disabling slider or changing it with other title type

Example Breadcrumbs or Title, Go to Page Edit > Page Settings > Title Type

For overall website page title type go to Theme Options > Title & Bredcrumbs

For changing Custom link go to Theme Options > Footer > Bottom of Footer > Icon and Text Element in the right place
For editing or removing Back to Top or Quick Contact items go to Theme Options > Footer > More

Instead Quick Contact also you can create any page and assign it.

For changing Copyright text go to Theme Options > Footer > Bottom of Footer > Icon and Text Element
For changing background color of footer, go to Theme Options > Footer > More > Overall Footer Container
This section is Footer and this 3 columns are Widgets, You can edit Widgets from Appearance > Widgets

In widgets find Footer 1 to Footer 3 sidebar area sections and edit them.

For changing background image of Footer, Go to Theme Options > Footer > More > Overall Footer Style Kit

How to change background image?

You can edit row under tab General find Parallax image and replace, add or remove it.

For edit or disabling Parallax effect on this element, Edit it and from More tab you can find parallax speed. 0 or empty Means off.
This is a Content box and inside it there is Title Element and Text Element. It mean you can add or remove element inside content box.

For changing Background image, hover over content box and edit it to find Overall style kit.

For changing Background, hover over content box and edit it to find Overall style kit.
For changing color of title background text, Edit Title and Text Element and under tab Shape, you can find style kit for that line.
For changing color of title background text, Edit Title and Text Element and under tab Shape, you can find style kit for that line.
For changing color of title background text, Edit Title and Text Element and under tab Shape, you can find style kit for that line.
For editing menus items go to Appearance > Menus

For editing menu navigation settings go to Theme Options > Header > Header > Menu Element

And for styling menus go to Theme Options > Header > Header > Menu Styles of this Row