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

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

For disabling slider or changing it with other title types

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

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

This is a Service Box element.

You can edit icon, text, typography, colors and margins inside of this element edit box in page builder.

This is a Separator element, you can find it in Page Builder and edit it with ease.

This is Content Box element, that contains some Title and Text and a Button element.

You can edit Content Box for styling the box and then edit the Title and Text element for styling and settings of inside text.

This is Title and Text element, that you can find it in page builder.

For changing Background color go to Theme Options > Footer > Bottom of Footer > Row Container

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 is a Page Content widget that contains a page content, so you can edit this part in Pages > Footer Social Icons

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 of Footer, Go to Theme Options > Footer > Footer Widgets > Container Style Kit

How to change background

For changing the color go to Design Options tab and set your color  

For adding background Image (Parallax Image) You can edit row under tab General find Parallax image and add your image. 

for editing the Social Icons go to Theme Options > Header > Social Icons

you can set the hover FX and styling the icons via options and Stylekits there

For changing  margin (Position), go to Theme Options > Header > Top of Header > Social

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 this area go to Theme Options > Header > Top of Header and edit the Icon & Text element

For changing the background color go to Theme Options > Header > Top of Header > Row Container

For editing this area go to Theme Options > Header > Top of Header and edit the Icon & Text element