By default, all Book pages will sort alpha-numerically, based on their node titles, respective to the hierarchical level that they sit within.

Sometimes the alpha-numeric sort just doesn't work, though.

If you need to override the default sort, you can quickly an easily do this through either the Book outline settings in the node edit form or via the Outline tab on at the top of the node.

Below, we show the Outline tab method. Note that the Weight field is set to 0.

Open up the Weight field by clicking on it and select a weight.

Contrary to what you might think, the lower numbers will actually raise your content in the menu - think of the lower numbers as lighter, so they rise up.

Click Update book outline when you're finished.

Our final result shows an altered menu order within the Book navigation block.