The very first plugin you should install right from the start

Once you have just setup your Wordpress Blog, I advise you to install this Plugin straight away:
One Click Plugin Updater. This Wordpress Plugin will allow you to install other plugins remotely by putting the zip url in the field below - so without having to upload them with your FTP software.

For example, you will then be able to install your second plugin Theme Test Drive (see next installment):