If you opt to download your copy from the subscription site, I suggest you install and use the Autodesk Download Manager for quicker downloads and ability to pause/resume. Otherwise, you can always request for the DVDs.
When you get to the download page, you'll see 6 files available but you only need the 3 UK files. The other 3 are US English versions.
After installation, be sure to read the Readme document. I must admit, I sometimes ignore this document (too eager to use the software!). It contains important information for this release.
When you start Civil 3D, you'll be greeted by a welcome screen that contains links to the usual documentations and the new getting started videos which I think are great additions. Some like myself learn a lot quicker through visual than reading materials. At the start of the video, it says “No Audio” (though I can hear the cursor click sound) but have texts to guide you through the videos.
The User Interface Overview will help you find your way around the new interface. This can also be accessed through the Infocenter toolbar.
And don't forget the new features workshop. It can now be accessed in the Infocentre toolbar. “Old” new features for 2008 and 2009 are also available to view in case you skipped any of these releases.
Lastly, download and view Jack Strongitharm's powerpoint presentation on the 2010 UKIE country kit. It discusses installation notes, known limitations, country kit documentation and new contents and reports.
Happy downloading!