Save space on your pages, posts, sidebars. Hide the content before user clicks to see it. Collapse long lists, create FAQs & more.

Noted That:

To install correctly this show-hidecollapse-expand.zip.
Fisrt Download the show-hidecollapse-expand.zip to your computer
Extract/Open show-hidecollapse-expand.zip to Your Computer.
Then, Find readme.txt file inside show-hidecollapse-expand.zip and Open readme.txt.
Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
Then, Follow the the Tips Below.

Start the Tips:

1. First Download "show-hidecollapse-expand.zip" Plugin to your Local Computer. (Click Download)

2. Then, Login to your "yourdomain.com/wp-admin" Dashboard.

3. Then, Click on "Plugins" + "Add New" from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse "show-hidecollapse-expand.zip" Downloaded plugin from your computer, Where you downloaded show-hidecollapse-expand.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "Show-Hide / Collapse-Expand" folder is added on left sidemenu. Now, Click on "Show-Hide / Collapse-Expand" folder.

Noted that: If you do not see "Show-Hide / Collapse-Expand" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about Show-Hide / Collapse-Expand Configurtions and Settings or How to work "Show-Hide / Collapse-Expand" in your WordPress site.

After Activated Plugin According to Step-6 then,

Go to "Plugins" + "Installed Plugin" from Wordpress Admin Panel Leftside Menu.
or Direct go to: https://yourdomain/wp-admin/plugins.php
Then, Find "Show-Hide / Collapse-Expand" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is Show-Hide / Collapse-Expand
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide
Upload the plugin files to the ‘/wp-content/plugins/show-hidecollapse-expand’ directory, or install the plugin through the WordPress plugins screen directly. Activate the plugin through the ‘Plugins’ screen in WordPress. Go to Tools->ShowHide/CollapseExpand screen to customize plugin settings (animation effect and animation speed). Go to the post/page you need to add the shortcode to and click the Collapse-Expand button in your TinyMCE Editor. Customize the needed settings: select type of control with which you want the user to expand/collapse the content, select the color of your hyperlink or button text, type in your labels for expanding/collapsing the content, select the icon for your button/link, etc. If needed, go to Tools->ShowHide/CollapseExpand screen and switch to the Help tab to see the full list of shortcode parameters.

Guide

Upload the plugin files to the ‘/wp-content/plugins/show-hidecollapse-expand’ directory, or install the plugin through the WordPress plugins screen directly.
Activate the plugin through the ‘Plugins’ screen in WordPress.
Go to Tools->ShowHide/CollapseExpand screen to customize plugin settings (animation effect and animation speed).
Go to the post/page you need to add the shortcode to and click the Collapse-Expand button in your TinyMCE Editor.
Customize the needed settings: select type of control with which you want the user to expand/collapse the content, select the color of your hyperlink or button text, type in your labels for expanding/collapsing the content, select the icon for your button/link, etc.
If needed, go to Tools->ShowHide/CollapseExpand screen and switch to the Help tab to see the full list of shortcode parameters.

long, collapse, clicks, lists, create, more, faqs, user, before, pages,

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Reffered: https://wordpress.org/