I can only see one content section, where are the others?

This refers to Moodle 3.10 from August 2021 onwards

I can only see one content section, where are the others?

There are a couple of features to help you avoid scrolling through the content section down the centre. One of these is the list of module sections in the Hamburger menu   on the top right when you are on a Module page

Here is an example:

Click on the title of a section to go straight to that section.

Some modules have a format in which all the sections are collapsed initially. You may see just the title or a description of the section as well.

Here is an example

Using the section toggle icon in Collapsed Topics format modules

Some modules have a format in which all the sections are collapsed initially.

There is an icon at the top of the list of sections which can be clicked on to either expand (Open all) or contract (Close all) all the sections.

You can also expand or contract a section by clicking on the title or by clicking on the arrow icons. 

To open:

To close:

Within any resource or activity in Moodle there are links to previous and next items

You can also "Jump to..." any of the other activities or resources in the course.

Here is an example: