Noted That:

• To install correctly this bitvolution-image-galleria.zip .
• Fisrt Download the bitvolution-image-galleria.zip to your computer
• Extract/Open bitvolution-image-galleria.zip to Your Computer.
• Then, Find readme.txt file inside bitvolution-image-galleria.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 Tips Below.

Start the Tips:

1. First Download " bitvolution-image-galleria.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 " bitvolution-image-galleria.zip "  Downloaded plugin from your computer, Where you downloaded bitvolution-image-galleria.zip According to Step – 1 Above then, click on " Install Now"

6. Now, Click on " Active Plugin"

7. Then, See left sidemenu. " Bitvolution Image Galleria " folder is added on left sidemenu. Now, Click on " Bitvolution Image Galleria " folder.

   Noted that: If you do not see " Bitvolution Image Galleria " folder on left sidemenu then, see at left sidemenu " Settings " or " Tools ".

8. Now you configure yourself oR Watch video tutorial below about  Bitvolution Image Galleria Configurtions and Settings or How to work " Bitvolution Image Galleria " in your WordPress site.

After Activated Plugin According to Step-6 then,

1. Go to " Plugins " + " Installed Plugin " from Wordpress Admin Panel Leftside Menu.
2. or Direct go to: https://yourdomain/wp-admin/plugins.php
3. Then, Find " Bitvolution Image Galleria " Activated Plugin from Plugin List.
4. Then, Click on " Settings " from Plugin that is Bitvolution Image Galleria
5. Now, Edit/Add/Config the setting and Click on " Save Changes " button,

Here we go:

1. Upload the bitvolution-image-galleria folder to the /wp-content/plugins/ directory.
2. In the WordPress Dashboard, activate the plugin through the ‘Plugins’ menu.
3. In the WordPress Dashboard, go Settings-> Media and modify the Thumbnail size to 80×80 (WordPress default is 150×150) and the Medium size to 500×375 (WordPress default is 300×300). If this is a brand new site with no images uploaded you can go to the next step. However, if there are already existing images uploaded, WordPress will not resize them to your new dimensions and so this plugin will not function all that well. To fix this is easy – Install the Regenerate-Thumbnails plugin and use it to re-generate all images to your new dimensions. Once done you can remove the Regenerate-Thumbnails plugin.
4. Upload a couple of images to a post and use the normal gallery shortcode [gallery] to display the image gallery.
5. Optional for a trivial increase in performance – Copy&Paste the CSS code in bitvolution-image-galleria.css to your themes style.css file and then comment out the line that contains "bitvol_galleria_css" in bitvolution-image-galleria.php .