Your participation and time spent on the site is entirely up to you. Each learning course or topic will take you approximately 30-40 minutes, depending on how much time you would like to spend thinking about the information and activities. You can spend as much time as you want in a dialogue space talking with your peers.
The more time you spend, and the more you participate in meaningful dialogue (asking good questions, sharing, challenging, reflecting, and building a dialogue thread around one comment/post) the more Experiential Points (XP) you will earn.
Your teacher may also work with you while you use this site, and they may ask you to do it in parts, giving you time limits so that you are working as a class or at a certain pace.