It can sometimes be helpful to re-visit a past week's study or look forward to a future week as shown in the video below.  If you tap on the 'Week' icon in the top left of the home screen with the week number you are currently on, it will take you to an area where you'll see 'Upcoming' and 'Past Weeks'.  From here you can select which week to jump to. 

If you have any further questions about this please raise a ticket here to contact one or our WordGo customer support agents.