Upload your own lessons into your Tutor Library by clicking on your Library tab and then selecting "Upload your own material." Enter a title, the lesson URL (the link to the material), and an image URL (this will be used as the thumbnail image associated with the lesson). Be sure to identify the difficulty level and category of your material.
Note: If you'd like to upload your own personal material that is not already publicly available, you can add it to a cloud service, like Google Drive, and then share a public URL. You can find more information on that here: https://www.wikihow.com/Make-a-Google-Doc-Public.