A deck is a curated collection of flashcards centered around a specific subject or topic. Decks help you organize your study materials efficiently and to meet your learning objectives. You can adjust the learning algorithm, set the number of cards you get daily, and add audio features for each deck.

A subdeck is a set of flashcards within a larger deck. It makes it easier to manage and study specific segments of your material. For example, you can create subdecks for each chapter of a textbook and compile them into a main deck. Here’s how to create a subdeck in Noji:

1. Create new Subdecks: In your main deck, click the "+" button. On mobile devices, swipe left on the main panel to access this button.

2. Organize Decks into Subdecks: If you already have a deck you want to use as a subdeck, simply click the “↱” button and choose it's destination.

To study all the cards in a main deck, including those in subdecks, simply open the main deck. If you prefer to concentrate on a particular subdeck, click the "+" icon within the main deck to access and select the specific subdeck you want to study. This allows you to tailor your learning experience to your needs.