We are delighted that you have decided to try Ubuntu, and are sure that you will find that Ubuntu's GNU/Linux distribution is unique. Ubuntu brings together high-quality free software from around the world, integrating it into a coherent whole. We believe that you will find that the result is truly more than the sum of the parts.
We understand that many of you want to install Ubuntu without reading this manual, and the Ubuntu installer is designed to make this possible. If you don't have time to read the whole Installation Guide right now, we recommend that you read the Installation Howto, which will walk you through the basic installation process, and links to the manual for more advanced topics or for when things go wrong. The Howto is in Appendix B, Installation Howto.
With that said, we hope that you have the time to read most of this manual, and doing so will lead to a more informed and likely more successful installation experience.