These are 'external' or contributed modules not found in your Drupal original installation.

We need to download the modules to our computer and upload into our cPanel folders. In this case we make our external modules available for all sites (though currently we only have one site my_domain.com). So we create/put in /sites/all/modules/[here]

Here we use Nodewords module (aka Meta tags module)to set some tags for better search engine purpose.

Get Drupal Module 'Nodewords', Download To Your Computer And Upload To cPanel

In your harddisk, create a new folder:

Select > My Computer > Local Disk(C:) > File > New > Folder > [Enter folder name say] 'mydrupal'

Go to Drupal Project Nodewords

Select > [Download] nodewords-5.x-1.8-rc1.tar.gz > [save to folder] c:/mydrupal/[put file here] > Save

Don't forget check file with md5 checksum method.

Go to https://www.my_domain.com/cpanel

Login username and password.

Select > File Manager > Go > public_html > sites > all > New Folder > [New Folder Name] modules > Create New Folder >
(continue) modules > Upload > [look for your c:/mydrupal folders] select nodewords-5.x-1.8-rc1.tar.gz > Open (...wait till 100% complete...) > X (close window]
(continue) > [select file] nodewords-5.x-1.8-rc1.tar.gz > Extract > [/public_html/sites/all/modules] > Extract File(s)> [message 'Extracting Archives.....'] > Close

Log out.

Website Enable Nodewords Module, Grant Access/Permission

Important:
For any external/contributed module, after we upload module to cPanel, we must do this for our Drupal website:-

1. Enable module
2. Grant Access/Permission to module
3. Configure module if necessary ( a new link to the module may be created)

Go to your Drupal website at http://www.my_domain.com/

Login 'eve' username and password

Select Administer > Site building > Modules > [scroll down]. You can see the 'Meta tags' (nodewords) module below.

> [Enabled] check > Save configuration.

Select Administer > User management > Access Control > [scroll down] > [nodewords module] > [administer meta tags] check [superuser only] > [edit meta tags] > check [superuser only] > Save permissions

That's it.

'About Us' Page - Insert Keywords For Search Engine Using Nodewords Module

Select [Our Company] > About Us > Edit > [scroll down] > Meta tags > [Keywords,type] hardware, engineering, motor > [Description,type] our main business activities, guaranteed quality and delivery.... (continue)

(continued) > [scroll down] Submit > Log out.

Click the 'About Us' link. (your address path should be my_domain.com/about_us)

In your Explorer browser window, select > View > Source. You can see the meta tags 'hardware, engineering, motor..'.

Add keywords for the other pages as you wish.