First add pages that are on the first level in your hierarchy (marked in bold in the preceding diagram). Then add the pages from the second level (marked in grey). You can adjust the page alias and menu text.
Add some sample text to the pages or write down what each single page will contain. If you have some ideas that are nice but should not be available on the website from the very beginning, then create some inactive pages holding these ideas.
Do not create more than two levels at the beginning. Even though it is possible to create a large number of levels, your visitors will find the navigation of the website more user friendly if they do not have to click 5 or 6 times to reach the desired information. It is better to start with two-level navigation to simplify learning layout and design in the next chapter.
The result of the website structure presented above is as follows:
Please note that the Start page has been renamed to Our Company.