To keep track of how many people are visiting your page, you can put a counter on the page or you can subscribe to a service that provides you with a statistical report on your visitors.

Many beginners are attracted to the idea of a counter because it shows everyone how many visitors you've had. The problem is that it may show how few visitors you've had, and it doesn't really impress anyone. Serious websites don't feature these counters. Here is a reason why you shouldn't rely on the counters that may appear on websites: http://www.pagetutor.com/megacounter/

If you want to use one though, have a look at StatCounter You can use this to set up a counter and also to keep statistics (see below).

Statistical reports can provide useful information about your visitors: not identifying them in person but reporting on what country they come from, or whether they come form a school or government organisation. As stated above, Statcounter can provide this sort of service as can Google Analytics.

These statistical reports usually won't be seen by your visitors.