Installing Magento Extensions : Easy Install Guide

Make sure you've gone through the Pre-install_Checklist before starting!

Copying the files

Unzip your extension package.
Inside that package you'll see Step_1, open that folder inside your FTP app.
Locate your website's Magento app folder using an FTP app. You should now have the contents of Step_1 on one side, and your main website folder (containing the Magento app folder) on the other side.

Drag the folders from inside Step_1 into your remote site (the important thing here is not to drag on top of another folder, or the files will be placed in the wrong location - easiest is to drag onto a file or blank space on the remote side).
You may be asked Merge or Replace? by your FTP app. Choose Merge for folders and Replace for files.
When that has completed, open Step_2 in your unzipped extension folder.
Using the same procedure, copy the contents of Step_2 into the same location in your Magento installation.

Go to the System > Cache settings, and clear all caches (click Flush Magento Cache and Flush Cache Storage).
Log out then Log in.
Head to System > Permissions > Roles.
Check that you have assigned the new Moogento Extension options to the appropriate roles, and save.
Head to System > Permissions > Users.
Check that you have assigned the new Moogeto Extension options to the appropriate users, and save.
Navigate to System > Configuration and then to the specific config page for your new Moogento Extension.
At the top, if this extension requires a license key, enter your license key (this will have been emailed to you; you can also find it inside your Moogento account downloads section).
Save this page.
Check that it works at a basic level; this is also a good time to check your public store front. I would also make a test order at this stage.
If everything is ok and you have previously disabled compilation, now you can enable it.

You should now be setup at a basic level.

If you have any issues, check the Troubleshooting guide.