Choose a section from the table of contents opposite and click on it to make it appear in this window.
Within the sections if you see a mathematical keyword is highlighted then there is a glossary entry for it, i.e. a brief explanation of it, which you can see by clicking on the keyword.
The glossary entry will appear in the "table of contents" window. To retrieve the table of contents, click on the "return to table of contents" command in the top left-hand window.
If you feel confident with coordinates and graphs already, then feel free to skip to the exit quiz at the end.
In some sections of the Notebook there are suggestions for using the plotter tool below.