Reading
Lute comes with a Tutorial demo (you can find the text here). Here's a very brief overview of the key features:
(Note: This page is slightly out of date, but the ideas are the same)
When you first open a text, it will look something like this:
All of these words are blue because they are "unknown" - according to Lute, this is the first time you're seeing these words.
If you click on a word, you can add a definition and some detail:
When you save the term, the reading pane is updated:
If you hover over the word, the information is shown in a pop-up:
When you are done reading a page, mark it as "done" and go to the next page using either of the links at the bottom of the page:
The green checkmark sets any remaining blue items to "well known".
Here's what the page looks like after the green checkmark is clicked:
Lute has other features like hotkeys to quickly set term statuses (New, Learning, Well-known, Ignore), bulk updates, parent terms, term images, etc. These are documented in the Tutorial, which you can walk through when you first install Lute.