Google Analytics (GA) has been installed on your website. GA is a free tool that can be used to track information about visitors to your site. It can provide you with information about how visitors found your website (e.g. directly, using keyword searches via a search engine or a referral from another website). You will see which pages have been visited and how long visitors spent on your pages as well as more information about the visitor's browser, network and so on.
GA is an all-singing, all-dancing "enterprise-class" tool, so many of its features don't apply to simpler non e-commerce sites. But don't be put off by the myriad of options available as GA can offer some really useful and fascinating insights into what has been happening on your site.
You can view statistics for a date range by clicking on the drop down arrow to the right of the two dates shown on the right hand side. Select a start and end date and then click "apply".
The "dashboard" column on the left hand side of the screen can tell you more about:
1&1 also provide information about visitors to your site. Recently (March 2011) they have upgraded the software and it may now be worth considering using SiteAnalytics as an alternative to Google Analytics if you find the data simpler to access.
However, we have found vast discrepancies between reported visits in 1&1 SiteAnalytics and the Google Analytics equivalents. 1&1 are reporting many more visits, which may mean that they are including visits by robots (these crawl the web indexing pages for use by search engines) - this may be a temporary problem, resolved by the time you read this!
You can request email reports - click on the "Settings" link and then "Reports by Email" - you can request a single report or more usefully periodic reports. Every so often you will need to renew your "subscription" for periodic reports - 1&1 will email you with notification that the subscription has expired.