I ran accross this on digg.com this morning. How to Install Anything in Ubuntu. If you are a Linux Newbie and would like to understand how to administer your new Ubuntu OS, this single page how-to will be something you can use over and over again. Heck, even if you are a seasoned Linux user, you may find something new in this article.
On a side note, I've installed and started using Ubuntu in Parallels on my MacBook. I had to go back to the 5.10 version in order for it to see my flat panel screen correctly, but then the apt-get upgrade to Dapper Drake was a breeze. I have 512MB RAM dedicated to it, and it runs fairly quickly. Internet access through the OSX host system is a tad slow.
One night I had ssh'd into my Mac OSX host, then ssh'd into my server to update something. Pretty cool. I even have a basic Ruby On Rails system up on the Ubuntu side. I need to try and install that on my Mac side next. Sometime this week I will get around to reviewing the Dapper Drake release of Ubuntu. I have installed it on my workstation and my server, so will be able to put it through it's paces. So far I have to say it's been real nice.