Can the student download the text in the course? If they can how do I make it available to them?
Text lessons can't be downloaded in the same way as videos, audios, PDFs, etc - i.e. there's no way to add a "Download" button to text lessons. If the student wants to save a text lesson then they could always copy-and-paste it or print the page.
To make life easier for your students, though, I would recommend putting your content into downloadable PDFs instead. More on the PDF lesson type here.