There are two kinds of pages with information: Family pages and Individual pages.
1) The Family page shows two (or maybe one) persons, the male on the left and female on the right. Date and place information for: Birth, Christening, Death and Burial is shown for the two persons, if known. Also the Cause of Death (if known), number of spouses and FindAGraveID (if it exists) of each person is shown. Above each of these persons is listed their parents names, if known. Below the personal information is Marriage information (if known) and then the children of these two people, including step-children, if any.
Clicking on any of the parent's or children's names will take you to the Family page for that person.
Clicking on the Spouses button will get a pull-down menu with the spouses listed, and clicking on one of those names will take you to their Family page.
Clicking on the FindAGraveID button will open a new window or browser tab and take you to the Find-A-Grave website for that person. To return to this family tree just close out the Find-A-Grave page.
Clicking on the date/place information in the Marriage section displays additional information about the marriage, if known.
Clicking on the Index button at the top of the page will display the family tree index sorted by surname.
Clicking on the Descendants buttons at the top of the page will display the descendants for the husband or wife.
Clicking on the Ancestors buttons at the top of the page will display the ancestors for the husband or wife.
Clicking on either of the two main names (large blue font) in the Family will take you to their Individual information page.