You can find your site statistics by visting your primary administrative page where there is a link to your site statistics.

The first page you will see provides very general information for the past 12 months (or since you became a Tools for Organizations client).

Click on the month name in order to view more details about that month. The site statistics run daily around 4am central time.
 

• Hits:
  If your homepage has 12 images on it, then any one person will generate 13 hits every time the come to your homepage, 12 images, and the page file itself. If they return to your homepage 10 times in 10 minutes, then they just created 130 hits. This is true for all pages on your site. This is NOT good information.
• Visits:
  Counts information for each one visitor for at least 20 minutes of activity. They can return to your homepage or other pages 50 times in 20 minutes, and it counts their visit to your site once.
• Pages:
  Refers to the number of main section pages each person visits. So, if they visited multiple pages in the donate section, volunteer section, and about us section, that would be 3 "pages". It's useful to divide pages by visits to get the average number of sections that each person visited.
• Sites:
  is referring to the ISP's that people are using when the visit your site, not very useful information.

Your Webalizer stats will also count your staff going to your homepage or site, so if their browsers are set to go to your homepage by default when they open the browser each day, then that skews the stats.

Ideally, you'd have the browser homepage set to something else, or to your admin main page as that page is ignored in the stats.