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 > Header >  Logo element

For editing mobile and tablet header go to Theme Options > Header > Mobile, Tablet Header
For changing text go to Theme Options > Header > Top of Header > Icon and Text element before social element
For adding, removing and styling social icons go to Theme Options > Header > Header > Social Icons

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

For editing or removing menu badge, go to Appearance > Menus and find Join Now menu and edit it
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

This is a Tabs Element with some inner elements.

Tabs container, tabs items and inner item all have separate options which by mouse hover over each one you can edit settings and styling.

These are Content Box and inner elements such as title, text and button. All element have separate settings, By mouse hover over each one you can edit them.
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
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

This section is Carousel and inside it there are multiple Image element, You can edit each one separately, Also carousel have separate settings.
This Instagram widget is custom page content, For editing it go to Dashboard > Pages and find Instagram Widget page then edit it.
This is a Content Box Element that have background image, By editing content box you can change background image from Overall Style Kit.

Inner elements also have separate settings and styling.

For changing color of title line, Edit Title and Text Element and under tab Line, you can find style kit for that line.
For changing color of title line, Edit Title and Text Element and under tab Line, you can find style kit for that line.
How to change background image? You need to edit row under tab General find Parallax image and replace, add or remove it.
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 image, Edit it and from More tab you can find parallax speed. 0 or empty Means off.
This two boxes have -130px margin top, Edit each content box and from Overall Style Kit you can change margin.

For editing boxes Parallax effect, edit Content Box and under More tab you can find parallax settings. 0 or empty is off.

This is a Content box and inside it there is Title Element and Text Element and Button 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 color of title line, Edit Title and Text Element and under tab Line, you can find style kit for that line.
For changing color of background text Edit Title and Text Element and under tab Shape, you can find style kit.
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

For editing contact details go to Theme Options > Header > Top of Header and find first Icon and Text element
For changing header background go to Theme Options > Header > Header > Inner Row Container style kit
Edit slide and follow below

How to change background image of pages header?

Go to Theme Options > Header > Title and Breadcrumbs > Container, you can add or remove background image.