First of all you have to open the 'Contents' window, then select the section you want to learn and click the 'Review' button. This option is not stored by the program, so if you want to learn this section again, you will have to repeat this procedure on every start.

The second way to do this is to move the chosen section to the top of the table of contents (in the 'Contents' window). Then you have to sort the entire collection according to the order in the tree (option: File: Reset: Sort pending by contents). This method will change the order permanently. Notice that the 'Advanced English' collection is sorted by difficulty. We recommend to resort the entire collection by difficulty after the learning process of the chosen section is finished (option: File: Reset: Sort pending by ordinals).