(UXW) Update our documentation for Oppia users and lesson creators

[seanlip]

Platform
Oppia Web

Describe the request

We have some documentation for users at:

• oppia.github.io (source: https://github.com/oppia/oppia.github.io)
• https://oppia-user-guide.readthedocs.io/en/latest/ (source: https://github.com/oppia/creator-documentation)

The former is very old and hasn't been updated in years. The latter was created while the corresponding functionality was still in the process of being implemented, and was never released formally; it is also a bit out of date.

It would be nice to take a pass on these, and:

• Update anything that needs to be updated (including images/videos)
• Consider the information architecture -- should we consolidate the two in one place?
• How do users find out about this documentation -- what are the entry points?
• Publish the documentation for the benefit of Oppia users and lesson creators

This is purely a UXW (not UXD) project, though it may be worth collaborating with UXD on the entry points to the documentation from the website.

UXR success criteria*

• Parents/Teachers can use the website without issues.
• Lesson creators can use the website without issues.

DESIGN APPROVAL CHECKLIST -- DO NOT EDIT.

• UX Design approved (Android mocks should include dark mode)
• UX Writing approved
• Product approved

For a design project to be completed, it needs approval from UXD, UXW and PM. Please tag the following reviewers when your project is ready (at least one reviewer for each of the bullet points below):

• UXD: @rflore / @S4v8n (for Web projects), @seanlip (for Android projects)
• UXW: @tamiorendain
• PM: @seanlip