How to learn from a GitHub project or list

This link goes to a GitHub page. It may be a list of lessons, a tutorial, or code to read.

Steps

Open the link. You do not need an account to read a public GitHub page.
Start with the README. It is the text shown below the file list. It tells you what the project is for.
Look for a folder called docs, tutorial or examples. Those are the lessons.
To get the code on your PC, click the green Code button, then Download ZIP. Unzip it. You do not need Git for this.
Follow the README steps in order. If one step fails, read the Issues tab for the same error.
Check the license (the LICENSE file) before you reuse code in your own project.

GitHub pages are long. Use the headings list in your screen reader to jump between sections.
Press / on GitHub to open search, and T to find a file by name.
Dark or high-contrast theme: GitHub Settings, then Appearance. Needs an account.
Language: in Chrome or Edge, right-click the page and pick Translate. In Safari, use the page menu button, then Translate. The translation is by a machine, so check anything that looks odd.
Read it aloud: Edge has Read aloud (Ctrl+Shift+U). Windows has Narrator (Win+Ctrl+Enter). Mac has VoiceOver (Cmd+F5). NVDA is a free screen reader for Windows.
Make it bigger: press Ctrl and + (Cmd and + on a Mac). Reset with Ctrl+0.
Keyboard only: Tab moves to the next link or button, Shift+Tab goes back, Enter opens it.
Tire easily or lose focus? Work in short blocks, for example 15 minutes, then rest.

Expect to read documentation and to install tools. Allow a few hours or days.
Work in small steps and test often. Keep notes of what you tried.
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