Go to Appearance - Themes. Click Add New, then click Upload Theme. Choose zip file with theme and click Install now and Activate.
Also you can install a theme via FTP. Unzip zip file with theme, then connect to FTP to your site and copy the theme to a folder /wp-content/themes/
After that activate theme in admin dashboard Appearance - Themes
Main theme settings are available on the page Appearance - Cusomize
Create header menu
After you have installed the theme, click the link "add header menu" in the site header.
1. Give the name of your menu
2. Select categories, pages or links which you want add to header and click "Add to menu"
3. Check theme location where you want to show menu, in this case it's "Header menu"
4. Save menu
Similarly, you can create Footer menu.
Create Popup link
Go to Appearance - Menus, at the top right corner
1. Сlick Screen Options
2. And check CSS Classes
Then in the left block click Links an add new link.
1. Field URL value must be #
2. Link text - this is your link which you need
3. CSS Classes must be - popup-click
4. Save menu
After that go to Appearence - Widgets and put Colored Popup Widget to Colored popup area.
Add text to text field. If you want use shortcode put it to shortcode field or leave blank this field.
If you need Contact form for Popup window, you can try Ajax message form.
To display the search there are two widgets:
- Colored Header Search
- Colored Sidebar Search
Or you can use default WordPress search widget.
Slider Image Sizes
Optimum image width for the slider 1120 px . The height can be set as you want. The main thing that the sizes of all images which you will use in a slider were identical.
Set these dimensions on the page Settings - Media . Large size it's slider image dimensions.
To update the size of old thumbnail images, you can use plugin Regenerate thumbnails or Dynamic image resizer