There are two ways.
1. Use the Table of Contents. The weekday readings are located in the Proper of Seasons. Clicking on the book icon by The Proper of Seasons will expand it to show all the entries in the Proper of Seasons. Within the Table of Contents a closed book icon indicates that there are more levels within that section and they can be viewed by clicking directly on the book icon.
2. If you have a Liturgical Calendar, for the days they will list the readings and typically after the reading they will have a number in parenthesis. That number is the Lectionary number and the Faithware Librarian has a "Go to a Reading in the Lectionary by Number" function. Do a Ctrl+R, enter the number and click on the GO button.