The background is color non-intrusive, the fonts readable, and the images are viewable. This problem is resolved by decreasing one's font size in the browser. People who are not aware of this, however, will have problems reading all sample questions in the lessons. Sufficient amounts of information per page are used, especially considering each lesson's objectives. The text and graphics combinations are very appropriate.
Graphics are sparingly and appropriately used to decrease wait time.
Finding information is easy with the hypertext links in the navigational columns. The site's search engine contains simple Boolean options and pulldown menus to narrow or broaden searches. Navigational aids include the site's consistent layout of hypertext links in the extreme left and right hand columns. No other navigational aids are really necessary with this consistent layout design. Information flow , in general, is logical from one page to another.