How to install Query posts by category... and display posts on page in grid layout without coding - Content Views plugin:
Go to Wordpress admin area and click "Plugins" and then "Add New" menu item.
In the right panel (left top) you will see "Upload Plugin" button. Click the button.
Next click the "Choose file" button in right panel (center).
Select zip file of the "Query posts by category... and display posts on page in grid layout without coding - Content Views" plugin located on your hard drive and press "Open".
Click "Install Now" and the zip file will upload to your site.
Now click "Activate" button to activate the "Query posts by category... and display posts on page in grid layout without coding - Content Views" plugin.
We've tested following plugins published by: PT Guy